Reported / Citable
Background
Mateo Pablo-Gutierrez was charged by indictment in the Western District of Texas with illegal reentry in violation of 8 U.S.C. § 1326. On June 22, 2026, he appeared before Magistrate Judge Robert F. Castaneda with counsel and entered a guilty plea to Count One of the Indictment pursuant to a Plea Agreement.
Before accepting the plea, the magistrate judge conducted a full Rule 11 colloquy, advising the defendant of his rights to trial by jury, to confront adverse witnesses, to be protected against compelled self-incrimination, and to be represented by counsel at every stage of the proceedings. The defendant acknowledged understanding the nature of the charge, the maximum possible penalties, mandatory minimums, supervised release, and the immigration consequences of his plea.
The defendant also acknowledged that his plea agreement included a waiver of the right to appeal or collaterally attack any sentence imposed by the district judge, and that he could not withdraw his guilty plea if the court declined to follow any sentencing adjustments recommended in the agreement.
The Court’s Holding
Magistrate Judge Castaneda found that the defendant is competent, that his plea was made freely, knowingly, and voluntarily, and that it was not induced by any promises beyond those in the Plea Agreement or by threats or force. The court further found a sufficient factual basis to support the guilty plea.
Based on these findings, the magistrate judge issued a Report and Recommendation to the presiding United States District Judge that the guilty plea be accepted and that a judgment of guilt be entered. The matter is subject to final approval and sentencing by the district judge. Parties were notified that failure to file written objections prior to sentencing may bar both de novo review by the district judge and appellate review of factual findings adopted by the district judge.
Key Takeaways
- Defendant pleaded guilty to illegal reentry under 8 U.S.C. § 1326 pursuant to a plea agreement; magistrate judge recommends acceptance of the plea.
- The Rule 11 colloquy confirmed the plea was knowing, voluntary, and supported by a factual basis — all required predicates for acceptance.
- The plea agreement contains an appellate-waiver provision, foreclosing the defendant’s right to appeal or collaterally attack the sentence.
- Final acceptance and sentencing remain with the district judge; objections to the Report and Recommendation must be filed before sentencing to preserve appellate rights.
Why It Matters
This case reflects the routine but procedurally significant step of magistrate judge review in federal criminal guilty pleas. Under 28 U.S.C. § 636(b) and Federal Rule of Criminal Procedure 11, defendants may consent to entering a guilty plea before a magistrate judge, but a district judge must make the final determination. The Report and Recommendation framework ensures an additional layer of judicial review before a judgment of conviction is entered.
For practitioners, the case underscores the importance of the appellate waiver embedded in plea agreements for illegal reentry prosecutions — a standard feature in the Western District of Texas — and the procedural deadline for objections. Failure to object to the magistrate’s findings before sentencing can forfeit both de novo district court review and appellate review of factual determinations.