Opinion by Judge WARDLAW; Dissent by Judge SILVERMAN.

At issue is the application of the Speedy Trial Act in the context of the Southern District of California’s “fast-track” program for expediting illegal re-entry cases. Alejandro Ramirez-Cortez (“Ramirez-Cortez”) 1 was convicted of violating 8 U.S.C. § 1326 (1994), being a deported alien found in the United States after conviction for an aggravated felony. He contends that his conviction should be reversed because the eighty-five day delay between his arrest and his indictment violated the preindictment provision of the Speedy Trial Act, 18 U.S.C. § 3161 (b) (1994). The district court excluded the delay from its Speedy Trial Act calculation, retroactively finding that the thirty-day preindictment time period was tolled by Ramirez-Cortez’s requests for continuances. We have jurisdiction pursuant to 28 U.S.C. § 1291 (1994). Because we conclude that the exclusions of time were not supported by adequate and simultaneous findings on the record as required by our case law, we reverse.

I.

On December 4, 1997, San Diego Police officers detained Ramirez-Cortez on suspicion of driving while under the influence of alcohol. See Cal. Veh.Code § 23152 (West Supp.1999). Law enforcement officials determined that Ramirez-Cortez was in the United States, illegally following a prior deportation, and so informed the Immigration and Naturalization Service (“INS”). An INS records check indicated that Ramirez-Cortez had been deported on June 24, 1997, and had prior convictions for burglary, petty theft, transportation and sale of a narcotic controlled substance, residential burglary, and false personation.

On December 24, the government obtained a one-count complaint charging Ramirez-Cortez with violating 8 U.S.C. § 1326 , and an arrest warrant. Ramirez-Cortez was arrested on December 30 and made his first appearance, in custody, before Magistrate Judge James F. Stiven on January 8, 1998. Magistrate Judge Stiven set a preliminary hearing for January 22.

On January 21, the day before the preliminary hearing,' the government sent a proposed plea agreement to Ramirez-Cortez’s attorney in accordance with the Southern District’s “fast-track” policy. The fast-track policy was instituted to expedite resolution of the large number of illegal re-entry cases in the Southern District of California. See United States v. Chavez-Garcia, 16 F.Supp.2d 1190, 1191 (S.D.Cal.1998). As we have explained:

United States v. Estrada-Plata, 57 F.3d 757, 759 (9th Cir.1995). 2 The fast-track timeline often necessitates continuances beyond the thirty-day pre-indictment period required by the Speedy Trial Act:

Chavez-Garcia, 16 F.Supp.2d at 1191 . 3

On January 22, 1998, Ramirez-Cortez, personally and through his counsel, Mayra Garcia, 4 requested a six-week continuance of the preliminary examination to “work on a plea agreement.” Magistrate Judge Sti-ven granted the continuance in the following exchange:

The courtroom deputy filled out a pre-printed sheet which memorialized the January 22 hearing. She marked spaces indicating that time would be excluded pursuant to 18 U.S.C. § 3161 (h)(8)(B)®. On March 26, Judge Stiven initialed another pre-printed form, again indicating that the period from January 22 to March 25 would be excluded under section 3161(h)(8)(B)®.

On March 3,1993, following the six-week continuance, Ramirez-Cortez, personally and through counsel, requested another “time waiver” and continuance of two weeks and two days so that he could “further investigate a derivative citizenship claim.” Magistrate Judge Stiven ordered the time excluded and set a new preliminary hearing date of March 19, 1998. On March 19, 1998, having been informed that Ramirez-Cortez had decided not to accept the fast track disposition, Magistrate *1153 Judge Stiven reset the preliminary hearing date for March 26, 1998. On March 25, 1998, a federal grand jury returned an indictment against Ramirez-Cortez, charging him with being a deported alien found in the United States, in violation of 8 U.S.C. § 1326 .

On May 4, 1998, Ramirez-Cortez moved to dismiss the indictment for violation of the Speedy Trial Act. District Judge Irma E. Gonzalez denied the motion on June 1, 1999, finding that the time on the speedy trial clock had been excluded. Judge Gonzalez explained:

The case went to trial in July and the jury found Ramirez-Cortez guilty. Judge Gonzalez sentenced him to seventy-seven months in prison and three years supervised release. This appeal followed.

II.

We review a district court’s application of the Speedy Trial Act de novo. See United States v. Hall, 181 F.3d 1057, 1061 (9th Cir.1999). We review factual findings supporting an “ends of justice” exclusion for clear error. See United States v. Nelson, 137 F.3d 1094, 1108-09 (9th Cir.), cert. denied, 525 U.S. 901 , 119 S.Ct. 232 , 142 L.Ed.2d 190 (1998).

The Speedy Trial Act requires that “[a]ny information or indictment charging an individual with the commission of an offense shall be filed within thirty days from the date on which such individual was arrested or served with a summons in connection with such charges.” 18 U.S.C. § 3161 (b) (1994). However, certain “periods of delay shall be excluded in computing the time within which an information or an indictment must be filed.” Id. § 3161(h). The Act enumerates several specific types of excludable delay, see id. § 3161(h)(l)-(7), (9), and also allows exclusion “if the judge granted such continuance on the basis of his findings that the ends of justice served by taking such action outweigh the best interest of the public and the defendant in a speedy trial.” Id. § 3161(h)(8)(A). Such “ends of justice” findings must be “set[ ] forth, in the record of the case, either orally or in writing.” Id. In addition, the Act states that, “in determining whether to grant a continuance,” the court “shall consider” the following four nonexclusive factors:

Id. § 3161(h)(8)(B).

Summarizing the requirements of the Speedy Trial Act, we have stated that an “ends of justice” exclusion must be (1) “specifically limited in time” and (2) “justified [on the record] with reference to the facts as of the time the delay is ordered.” United States v. Lloyd, 125 F.3d 1263, 1268 (9th Cir.1997) (quoting United States v. Jordan, 915 F.2d 563, 565-66 (9th Cir.1990) (alteration in original, emphasis added)).

Although the six-week continuance was limited in time, the Magistrate Judge failed to make the requisite Speedy Trial Act findings at the time he ordered the délay. The hearing transcript shows that the court simply approved Ramirez-Cortez’s request for a six-week continuance “so [the parties] could work on a plea agreement.” The Magistrate Judge made no inquiry into the need for the continuance. Nor does the record indicate any consideration of the “ends of justice” factors. See Lloyd, 125 F.3d at 1269 (the district court “must conduct an appropriate inquiry to determine whether the various parties actually want and need a continuance, how long a delay is actually required, what adjustments can be made with respect to the trial calendars or other plans of counsel, and whether granting the requested continuance would ‘outweigh the best interest of the public and the defendants] in a speedy trial.’ ” (citation omitted)). Not only was a particularized inquiry as to the actual need and reasons for a continuance not made, the transcript reveals that the Magistrate Judge was granting blanket continuances. 5 Moreover, .the court twice indicated' — both times by checking off boxes on pre-printed forms — that the time would be excluded under section 3161(h)(8)(B)(i), but failed to make findings as to the statutory factors underlying that conclusion. Finally, the record is devoid of any basis for concluding that “the failure to grant [the] continuance would be likely to make a continuation of such proceeding impossible, or result in a miscarriage of justice.” See § 3161(h)(8)(B)(i).

In denying Ramirez-Cortez’s motion to dismiss, the district court acknowledged the lack of findings' in the record but nevertheless “inferred” that the Magistrate Judge intended to make an “ends of justice” finding. The district court then concluded that the time was properly excluded because of defense counsel’s need to prepare, presumably referring' to section 3161(h)(8)(B)(iv). We have held that “[simultaneous [‘ends of justice’] findings [are] unnecessary so long as the trial court later shows that the delay was motivated by propel" considerations.” United States v. Bryant, 726 F.2d 510, 511 (9th Cir.1984); see also United States v. Clymer, 25 F.3d 824, 828-29 (9th Cir.1994). The district court judge, a different judge than the Magistrate Judge who excluded the time, could not make that showing here. Be *1155 cause the Magistrate Judge who granted the two continuances failed to make any findings, the district court faced an insurmountable hurdle in her effort to determine whether the “delay was motivated by the proper considerations.” The district court was in no better position than we to speculate as to the “findings” that might support an “ends of justice” continuance under section 3161(h)(8)(B)(iv). Cf. United States v. Frey, 785 F.2d 350, 352 (9th Cir.1984) (district judge “could not have granted the delay ‘based on’ the, required findings concerning the ends of justice, because he did not realize that he was granting a delay”). Moreover, the district court’s finding that section 3161(h)(8)(B)(iv), which allows exclusion when the time is needed for “effective preparation,” motivated the exclusion is belied by the only evidence of the Magistrate Judge’s motivation that we do have, the pre-printed forms on which the court clerk and Magistrate Judge checked the space indicating that the delay was granted under section 3161(h)(8)(B)(i). This is a separate provision which allows exclusion of time if failure to exclude time would “likely make a continuation of such proceeding impossible” or would “result in a miscarriage of justice.” Therefore, the district court’s post hoc evaluation of the considerations it believed should have motivated the Magistrate Judge does not cure the lack of simultaneous findings.

The government argues that the district court’s grant of the six-week continuance must be analyzed in light of the fast-track policy. Such continuances are routine, the government contends, and ultimately promote the efficient resolution of litigation. While the overarching goals of the fast-track policy may indeed serve to expedite the prosecution of the numerous section 1326 cases on the docket in the Southern District of California, using the mere existence of the program to justify automatic exclusions of time in every section 1326 case would be at odds with a primary purpose of the Speedy Trial Act. As we have repeatedly stated, “Congress did not intend the ‘ends of justice’ exclusion to be granted as a matter of course but rather to be used sparingly and only when necessary.” United States v. Lewis, 980 F.2d 555, 560 (9th Cir.1992) (citing United States v. Jordan, 915 F.2d 563, 565 (9th Cir.1990); United States v. Martin, 742 F.2d 512, 514 (9th Cir.1984)); see also Clymer, 25 F.3d at 829 (“the ‘ends of justice’ exclusion in section 3161(h)(8) is not to be routinely applied, and ... may not be invoked in such a way as to circumvent the time limitations set forth in the Act.”). We do not doubt the government’s contention that the fast-track program is an important element of section 1326 prosecutions in the Southern District. Nevertheless, the Speedy Trial Act requires case-by-case findings.

More importantly, in this case, the fast-track program is not part of the record. While the parties provided the Court with substantial information regarding the fast-track program on appeal, the program was not cited as a basis for the continuances granted by the Magistrate Judge or for the exclusion of time found by the district court. This case does not present the issue and we do not decide whether specific reference to the fast-track program in an individual case would support an “ends of justice” exclusion. On this record, however, which includes no reference to the fast-track program, we conclude that the fact that the program exists does not justify such an exclusion.

Even if we were to conclude that the district court somehow gleaned from the record proper considerations relied upon by the Magistrate Judge, our Speedy Trial Act jurisprudence would compel us to find a violation. The only articulated grounds that the Magistrate Judge could have relied upon was the defendant’s desire to engage in additional plea negotiations. We have held, however, that “[n]egotiation of a plea bargain is not one of the factors supporting exclusion.” United States v. Perez-Reveles, 715 F.2d 1348, 1352 (9th Cir.1983). Other circuits have rejected this rule. See United States *1156 v. Van Someren, 118 F.3d 1214, 1218-19 (8th Cir.1997) (stating that “ends of justice” exclusion and section 3161(h)(1) may in some cases permit continuation for plea negotiations); United States v. Fields, 39 F.3d 439 , 445 n. 7 (3d Cir.1994) (discussing and rejecting Perez-Reveles rule). 6 While there may be good reasons for allowing the need for plea negotiations to factor into the “ends of justice” analysis, particularly in the context of just and efficient handling of the overwhelming number of section 1326 cases in the Southern District of California, we feel constrained to adhere to our circuit’s prior precedent. 7 In another context, 8 the appropriate way to revisit the Perez-Reveles rule would be through the en banc process.

Finally, we reject the government’s contention that Ramirez-Cortez forfeited his right to invoke the Speedy Trial Act by stipulating to the continuance. Both the text of the Speedy Trial Act, see § 3161(h)(8)(A) (referring to delay “at the request of the defendant or his counsel”), and our precedent, see, e.g., Lloyd, 125 F.3d at 1268 , mandate the conclusion that a defendant cannot “waive” time under the Speedy Trial Act. As we explained in Lloyd , “the right to a speedy trial belongs not only to the defendant, but to society as well.” Id. (quoting H.R. Rep. 93-1508 (1974), reprinted in 1974 U.S.C.C.A.N. 7401, 7408); see also United States v. Berberian, 851 F.2d 236, 239 (9th Cir.1988) (“The parties cannot stipulate to a waiver of the protections of the Speedy Trial Act.”).

The dissent misplaces reliance on the rationale of New York v. Hill, — U.S. -, 120 S.Ct. 659 , 145 L.Ed.2d 560 (2000), which held that defense counsel may waive the right to trial within the time period set forth in the Interstate Agreement on Detainers (“IAD”), 18 U.S.C.App. § 2. There the Court rejected respondent’s argument that “the IAD benefits not only the defendant but society generally, and that the defendant may not waive society’s rights.” Id. at 665. Noting that the time limits in the IAD do not apply at all unless requested, the Court reasoned “it cannot be argued that society’s interest in the prompt resolution of outstanding charges is so central to the IAD that it is part of the unalterable ‘stat *1157 utory policy,’ ” id. (citation omitted), and concluded that “the IAD ‘contemplate[s] a degree of party control that is consonant with the background presumption of waiv-ability,’ ” id. at 665-66 (quoting United States v. Mezzanatto, 513 U.S. 196, 206 , 115 S.Ct. 797 , 130 L.Ed.2d 697 (1995)). The Court expressly distinguished the IAD’s “party control” feature from the particular features of the Speedy Trial Act:

Id. at 665 n. 2. We also note that the circumstances of this case, in which the government made the plea offer literally on the eve of the preliminary hearing, which forced Ramirez-Cortez to request a continuance to consider the government’s offer, not only call into question the volun-tariness of any waiver but also demonstrate the importance of the Speedy Trial Act’s feature of independent inquiry by the district judge. Cf. Lloyd, 125 F.3d at 1268 (“Congress designed the Speedy Trial Act in part to protect the public’s interest in the speedy administration of justice, and it imposed the sanction of dismissal under section 3162 to compel courts and prosecutors to work in furtherance of that goal.” (citing United States v. Antonio, 705 F.2d 1483, 1485 (9th Cir.1983))). 9

III.

Because excessive pre-indictment delay in this case violated the Speedy Trial Act, the charges against Ramirez-Cortez must be dismissed. See 18 U.S.C. § 3162 (a)(1). ‘Whether the dismissal shall be with or without prejudice is committed to the trial judge to consider based upon three factors: the seriousness of the offense, the circumstances leading to dismissal, and the impact that reprosecution would have on the administration of the Act and on the administration of justice.” United States v. Pollock, 726 F.2d 1456, 1463 (9th Cir.1984) (citing 18 U.S.C. S 3162 (a)(1)); cf. United States v. Hall, 181 F.3d 1057, 1063 (9th Cir.1999) (quoting Lloyd, 125 F.3d at 1271 ) (“our usual practice is to remand to allow the district court to decide in the first instance the type of dismissal that is appropriate”); see also United States v. Antonio, 705 F.2d 1483, 1486-87 (9th Cir. *1158 1983). But compare Clymer, 25 F.3d at 831 (appellate court should in certain cases determine prejudice). “If, after weighing the factors set forth in the statute, the trial court concludes this pre-indictment delay required dismissal with prejudice, the judgment and sentence shall be set aside; if dismissal without prejudice was the proper remedy, the court shall reinstate the judgment and sentence.” Antonio, 705 F.2d at 1487 .

IV.

Ramirez-Cortez raises three additional issues on appeal. First, he argues that the district court erroneously denied his Rule 29 motion for acquittal because the government provided insufficient evidence that he is an alien. Second, Ramirez-Cortez contends that the district court erroneously instructed the jury regarding the element of the absence of the Attorney General’s consent. Finally, Ramirez-Cortez argues that the district court erred in failing to grant him a third point for acceptance of responsibility under section 3El.l(b)(l) of the United States Sentencing Guidelines. We reject the first two arguments, but agree with Ramirez-Cortez’s contention regarding his sentence.

Sufficient evidence supported the conviction. Although neither a deportation order, see United States v. Sotelo, 109 F.3d 1446, 1449 (9th Cir.1997) (citing United States v. Ortiz-Lopez, 24 F.3d 53, 55 (9th Cir.1994)), nor the defendant’s own admissions, see United States v. Hernandez, 105 F.3d 1330, 1332 (9th Cir.1997), standing alone, will support the conclusion that a defendant is an alien, here the government offered Ramirez-Cortez’s prior deportation order, admissions Ramirez-Cortez made in his underlying deportation proceeding, and the testimony of an INS agent that his review of Ramirez-Cortez’s immigration records reflected that Ramirez-Cortez was an alien. Based on this evidence, a rational trier of fact could have found beyond a reasonable doubt that Ramirez-Cortez was an alien. Cf. United States v. Sotelo, 109 F.3d 1446, 1449 (9th Cir.1997) (finding sufficient evidence of al-ienage where the government’s evidence consisted of a prior deportation order, the defendant’s admissions to an INS agent that he was a Mexican citizen, and his admissions during the deportation hearing that he was not a United States citizen); United States v. Contreras, 63 F.3d 852, 858 (9th Cir.1995) (holding that sufficient evidence supported the conviction when the government introduced a prior deportation order, the deportation hearing transcript, which indicated that the defendant admitted his Mexican citizenship under oáth, and testimony of an INS agent that the defendant was a Mexican citizen). Furthermore, Ramirez-Cortez was not entitled to a voluntariness hearing under 18 U.S.C. § 3501 , and the district court properly admitted the statements made in the prior deportation proceeding. See United States v. Solano-Godines, 120 F.3d 957, 962 (9th Cir.1997).

Ramirez^Cortez’s challenge to the district court’s jury instruction regarding the Attorney General’s lack of consent to reentry is precluded by our decision in United States v. Blanco-Gallegos, 188 F.3d 1072 (9th Cir.1999). The district court instructed the jury that “as a matter of law that the Immigration and Naturalization Service, I.N.S., is the delegated authority of the Attorney General for purposes of seeking consent of the Attorney General to reenter the United States.” In Blanco-Gallegos we explained that “[t]he Attorney General has specifically delegated her authority to adjudicate applications for permission to reapply for admission into the United States to the INS,” id. at 1075 (citing 8 C.F.R. §§ 103.1 (f)(3)(iii)(E), 103.1(g)(3)(iii)(B)), and concluded that “[bjecause the INS is the Attorney General’s agent for immigration matters and specifically for processing applications for permission to reapply for admission into the United States, the jury could reasonably infer from the lack of an application in the INS’s A-File that no such application existed,” id. Therefore, the jury instruc *1159 tion was neither misleading nor inadequate.

Finally, Ramirez-Cortez contends that the district court erred in failing to grant him a third point for acceptance of responsibility under section 3El.l(b)(l) of the United States Sentencing Guidelines. Ramirez-Cortez admitted to all of the elements of the offense during his interview with the INS agent. This conduct amounted to timely and complete assistance to the authorities. See BlancoGallegos, 188 F.3d at 1077 (“Once the two-point reduction under § 3E1.1 has been awarded, the only question is timeliness and completeness”). Therefore, notwithstanding his putting the government to its proof at trial, Ramirez-Cortez was entitled to an additional one-level downward adjustment pursuant to section 3El.l(b)(l). See id,.; United States v. Eyler , 67 F.3d 1386, 1391 (9th Cir.1995). On remand, if the district court determines that the complaint should be dismissed without prejudice it shall resentence Ramirez-Cortez in accordance with this opinion.

REVERSED and REMANDED.

. Ramirez-Cortez was charged as Martin Ramirez-Cortez.

.The Supreme Court's recent decision in Almendarez-Torres v. United States, 523 U.S. 224 , 118 S.Ct. 1219 , 140 L.Ed.2d 350 (1998), may have required changes in the precise workings of the fast-track program. In Almendarez-Torres , the Court held that 8 U.S.C. § 1326 (b)(2) is not a separate crime, but merely a penalty provision permitting a sentencing enhancement for a defendant convicted under 8 U.S.C. § 1326 (a) with a prior violent felony conviction.

. A fasl-track timeline prepared by the government and submitted by the appellant indicates that indictment should occur on the fifty-first day after arrest. The timeline apparently is based on the assumption that the defendant would stipulate to time exclusion under the Speedy Trial Act.

. Ramirez-Cortez was represented by attorney David Zugman. Attorney Mayra Garcia filled in for Zugman at the January 22 hearing.

. It appears that at least three defendants' continuances were being simultaneously considered at the January 22 hearing. The transcript includes many '‘pause [s] for matter[s] pertaining to other Defendants.” Of course, there was only one defendant — Ramirez-Cortez — in Ramirez-Cortez's case. The Magistrate Judge asked whether, "each of” the defendants were "in agreement with the requested delay” and then ordered "the hearings set over.” The Magistrate Judge granted continuances in the Martinez case and the Martin case at the same time — indeed in the same breath — as he granted the continuance in Ramirez-Cortez's case.

. United States v. Lewis, 980 F.2d 555 (9th Cir.1992), is not to the contrary. In Lewis , the district judge excluded time because the government needed handwriting exemplars from the defendant, who had injured his hand and was unable to produce accurate exemplars. The district judge explained that the breakdown of good faith plea negotiations forced the government to quickly prepare for trial. Id. at 561 n. 9. In Lewis there were other independent and sufficient grounds to justify the continuance and the district judge considered the section 3161(h)(8)(B) factors and made specific findings. Therefore Lewis does not contradict the Perez-Reveles rule that plea negotiations do not justify exclusion of time. Cf. id. at 563 n. 13 ("the district court here cited his participation in plea negotiations for an entirely different purpose from that in Perez-Reveles ").

. The dissent fails to offer a meaningful distinction between this case and that of Perez-Reveles . It would confine the Perez-Reveles rule to "trial" continuances as opposed to delays in "filing the indictment." Post at 5506.- But Perez-Reveles is not fairly so confined. There we held that "[njegotiation of a plea bargain is not one of the factors supporting exclusion provided in section 3161(h)(8)(B).” Perez-Reveles, 715 F.2d at 1352 . Section 3161(h)(8)(B) applies with equal force to exclusions of time pre and post-indictment. See § 3161(h) ("The following periods of delay shall be excluded in computing the time within which an information or an indictment must be filed, or in computing the time within which the trial of any such offense must commence”). Moreover, in her post-hoc findings, the district court here expressly relied upon section 3161(h)(8)(B) to justify the pre-indictment delay.

.Because the Magistrate Judge did not articulate on the record any of the factors motivating his decision, even if we were to find that plea negotiations are properly considered, the outcome of this case would not be altered. See Jordan, 915 F.2d at 565 (finding a Speedy Trial Act violation in part because “the court made no findings to justify its August 28, 1987 order that set the trial date more than 70 days later”); Perez-Reveles, 715 F.2d at 1353 (finding a violation "because the district court's rulings did not include the explicit findings required by the Act”).

. The dissent cites Lewis and United States v. Shetty, 130 F.3d 1324 (9th Cir.1997), in support of the position that Ramirez-Cortez forfeited his right to raise the violation of the Speedy Trial Act. See Post at 5504. However, in both of these cases, unlike here, the district court made specific findings on the record. See Shetty, 130 F.3d at 1330 (“Each continuance at issue in Shetty's case was specifically supported by the district court's reference to facts, which were stipulated by the parties, and which buttressed each of its findings of excludable time under the Speedy Trial Act.”); Lewis, 980 F.2d at 561 (rejecting Lewis’s argument that the court failed to make specific findings, stating, "[t]his ruling clearly meets the Act’s specificity requirement.”). In addition, in Lewis , the government was unprepared for trial because the defendant failed to provide it with satisfactory handwriting exemplars in a timely manner. Unlike Ramirez-Cortez, Lewis’s “own actions contribute[d] to the need for an ‘ends of justice’ continuance.” Lewis, 980 F.2d at 562 . Furthermore, the dissent cites Shetty for the proposition that if defendants stipulate to continuances, they may not object under the Speedy Trial Act. However, unlike Ramirez-Cortez, Shetty stipulated to the factual basis for the continuances. See Shetty, 130 F.3d at 1330 . District courts may fulfill their Speedy Trial Act responsibilities by adopting stipulated factual findings which establish valid bases for Speedy Trial Act continuances. In this case, however, the court granted the request for a continuance without any inquiry into the factual basis for excluding time under the Speedy Trial Act.