United States v. Armin Harcevic, 999 F.3d 1172

Abdullah Ramo Pazara, a U.S. citizen, left the U.S. in 2013 to fight in Syria; supporters in the U.S., including Armin Harcevic, sent money to Ramiz Hodzic, who forwarded funds and supplies to Pazara. Harcevic sent $1,500 on September 24, 2013.
Pazara died in 2014; a federal grand jury indicted Harcevic for conspiracy to provide material support and providing material support in violation of 18 U.S.C. §§ 956 and 2339A.
Defendants argued lawful combatant immunity barred prosecution; the district court adopted magistrate factual findings but held the Geneva Prisoner of War Convention (GPW) controls and, because the Syrian conflict was non‑international, Article 2 POW status did not apply as a matter of law.
Harcevic entered an unconditional guilty plea after admitting he knew his transfer supported conduct amounting to murder/maiming outside the U.S.; there was no conditional plea preserving the immunity claim.
On appeal Harcevic argued lawful combatant immunity is jurisdictional (so his plea could not waive it) and that executive recognition or GPW could bar prosecution; the government treated immunity as an affirmative defense on the merits.
The Eighth Circuit reviewed de novo and held Harcevic’s unconditional plea waived the combatant‑immunity defense because it was a non‑jurisdictional, affirmative, fact‑based defense; the district court’s judgment was affirmed.

Issue	Harcevic's Argument	Government's Argument	Held
Whether lawful combatant immunity deprives federal courts of jurisdiction	Pazara was a lawful combatant; that immunity is jurisdictional and thus cannot be waived by plea	Combatant immunity is an affirmative, merits defense; courts have jurisdiction to decide it	Immunity is an affirmative defense; it does not divest the court of jurisdiction
Whether the GPW (Article 2) governs and grants POW status here	GPW and possible executive recognition could make Pazara a lawful combatant entitled to immunity	Article 2 applies only to international conflicts; Syrian war was non‑international so Article 2 POW status does not apply	Article 2 not applicable here as a matter of the court’s analysis; GPW does not confer immunity in this conflict setting for purposes of this case
Effect of an unconditional guilty plea on the immunity claim	Unconditional plea should not waive a jurisdictional immunity claim	A valid unconditional guilty plea waives all non‑jurisdictional defenses, including affirmative fact defenses	Harcevic’s unconditional plea waived the combatant‑immunity claim; appeal fails
Weight of Palmer dicta on jurisdictional protection	Palmer supports that U.S. courts lack power to criminalize acts of recognized belligerents	Palmer’s language is dicta and does not remove courts’ power to adjudicate; courts routinely decide such defenses	Palmer’s dicta do not make combatant immunity jurisdictional or immune from judicial determination

United States v. Hamidullin, 888 F.3d 62 (4th Cir. 2018) (analyzes combatant immunity and GPW application)
Ex parte Quirin, 317 U.S. 1 (1942) (distinguishes lawful and unlawful combatants)
United States v. Palmer, 16 U.S. 610 (1818) (dicta on recognition/neutrality and effect on criminal prosecution)
Class v. United States, 138 S. Ct. 798 (2018) (limits what a guilty plea preserves on appeal; exceptions for challenges to State’s power)
Lamar v. United States, 240 U.S. 60 (1916) (distinguishes jurisdictional power from merits defects in indictment)
Steel Co. v. Citizens for a Better Env't, 523 U.S. 83 (1998) (absence of a valid cause of action is not the same as lack of subject‑matter jurisdiction)
United States v. Pemberton, 405 F.3d 656 (8th Cir. 2005) (guilty plea admits facts that can form the basis for federal jurisdiction and waives related defenses)
United States v. Broce, 488 U.S. 563 (1989) (guilty pleas foreclose claims that contradict plea admissions)