United States v. Oscar Chavez-Diaz

Summary

The Ninth Circuit held that an unconditional guilty plea waives a defendant's right to appeal antecedent constitutional claims, including equal protection and due process challenges to prosecution procedures, unless the claim falls within the narrow Menna-Blackledge exception for challenges that would extinguish the government's power to prosecute. The court clarified that Class v. United States does not expand this exception to all constitutional claims that do not contradict factual guilt; rather, the exception applies only where success would mean the government cannot prosecute the defendant at all. Because Chavez-Diaz's challenges to the Southern District's separate calendar for illegal entry cases and related practices did not implicate the government's power to prosecute him, his unconditional guilty plea waived those claims.

Holdings

1. A defendant who enters an unconditional guilty plea waives the right to appeal antecedent constitutional violations, including equal protection and due process claims, unless the claim falls within the Menna-Blackledge exception which requires that the claim, if successful, would extinguish the government's power to prosecute the defendant at all.

Questions Presented

1. Whether Chavez-Diaz’s unconditional guilty plea waived his right to appeal his equal protection and due process claims regarding the handling of his prosecution.

Disposition

reversed_and_remanded