5th Cir.

United States v. Castaneda

June 12, 2026 ·25-11132 ·Per Curiam · By James Taylor

The United States Court of Appeals for the Fifth Circuit affirmed a twenty-three-five-month prison sentence for drug conspiracy. The court rejected the defendant's challenge to an importation enhancement and dismissed his argument regarding the enforceability of his plea agreement waiver.

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Background

Alexis Castaneda appealed his sentence of twenty-three-five months for conspiracy to distribute methamphetamine in violation of federal statutes. He argued that the district court erred by applying an enhancement for drugs imported from Mexico because he did not know the drugs were imported. He also argued that his plea agreement waiver was unenforceable because the sentencing judge indicated he had preserved the objection.

The court’s reasoning

The court found that Castaneda’s challenge to the importation enhancement was foreclosed by Fifth Circuit precedent. Because the merits challenge was foreclosed, the court pretermit the waiver challenge. The court determined that summary disposition was proper because there could be no substantial question as to the outcome of the case.

there can be no substantial question as to the outcome of the case

Groendyke Transp., Inc. v. Davis, 406 F.2d 1158, 1162 (5th Cir. 1969)

What it means going forward

The decision reinforces the strict application of sentencing enhancements for drug importation in the Fifth Circuit and limits the ability to challenge plea agreement waivers when the underlying merits claim is foreclosed by precedent.