906 F.3d 1170
10th Cir.2018Background
- In 2014 Shane Cox sold homemade silencers at his Kansas store; Jeremy Kettler purchased one. Both relied on Kansas’s Second Amendment Protection Act (SAPA), which purports to exempt firearms/accessories made, owned, and kept wholly within Kansas from federal regulation.
- ATF investigated; federal grand jury indicted Cox and Kettler on multiple counts under the National Firearms Act (NFA) (registration/taxation, making/transferring/possessing NFA firearms). Both pleaded not guilty; jury convicted on most counts (some counts dismissed).
- Defendants argued (a) the NFA is unconstitutional (exceeding Congress’s taxing power and violating the Second Amendment) and (b) their good-faith reliance on the SAPA constituted a defense (entrapment-by-estoppel or mistake of law). Kettler also argued he was unfairly "snared" in a state–federal constitutional dispute.
- District court rejected motion to dismiss: held NFA valid under Congress’s taxing power and not violative of the Second Amendment as applied; excluded SAPA-based reliance as a defense but admitted SAPA evidence for context and considered reliance at sentencing (probation).
- On appeal, Tenth Circuit affirmed: NFA upheld as a valid exercise of taxing power and not within Second Amendment protection for the items/activities at issue; SAPA reliance did not provide a legal defense though it mitigated sentence.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether the NFA is a valid exercise of Congress’s taxing power | Cox/Kettler: NFA has evolved into regulatory (not revenue) scheme; may produce no net revenue and thus exceeds taxing power | U.S.: NFA is a tax scheme (occupational/transfer/making taxes); Sonzinsky and Sebelius sustain taxing-power basis even if regulatory effects exist | Held: NFA is a valid exercise of Congress’s taxing power; Sonzinsky controls and some gross revenue suffices |
| Whether NFA provisions at issue violate the Second Amendment | Cox/Kettler: possession/transfer/manufacture of silencers and short-barreled rifles and related business are protected conduct | U.S.: Heller/Miller permit longstanding restrictions; silencers are accessories (not "bearable arms") and short-barreled long guns fall outside protection; commercial regulation presumptively lawful | Held: Second Amendment does not protect silencers, short-barreled rifles, or the business of manufacturing/dealing in silencers; no protected conduct for these NFA rules |
| Whether reliance on the SAPA provides a defense (entrapment-by-estoppel or mistake-of-law) | Cox: due process/estoppel — where state and federal laws conflict and state law not yet invalidated, good-faith reliance should be a defense. Kettler: Model Penal Code–style mistake-of-law defense because offense is malum prohibitum | U.S.: General rule bars ignorance/mistake of federal law; estoppel limited to misleading statements by agents responsible for administering/enforcing the law; state legislature is not such an agent; SAPA reliance was unreasonable | Held: SAPA reliance is not a defense; entrapment-by-estoppel and Model Penal Code mistake-of-law exceptions do not apply; district court properly excluded SAPA as a legal defense though it could be considered at sentencing |
| Whether Kettler is entitled to relief because he was "snared" in a state–federal constitutional dispute | Kettler: Kansas–federal dispute over SAPA unfairly ensnared him; he seeks protection beyond clemency | U.S.: No error in proceedings; remedies of executive clemency or state action not judicially remediable absent legal error | Held: No judicial remedy; appellant points to no district-court error; claim denied |
Key Cases Cited
- United States v. Sonzinsky, 300 U.S. 506 (upholding NFA as within Congress’s taxing power)
- Nat’l Fed. of Indep. Bus. v. Sebelius, 567 U.S. 519 (taxes that influence conduct remain valid exercises of taxing power)
- District of Columbia v. Heller, 554 U.S. 570 (individual right to bear arms is not absolute; longstanding regulations and "dangerous and unusual" weapons outside protection)
- United States v. Miller, 307 U.S. 174 (Second Amendment does not protect certain unusual weapons such as short-barreled shotguns)
- Staples v. United States, 511 U.S. 600 (mens rea presumption: defendant must know facts that make conduct illegal under NFA context)
- United States v. Dalton, 960 F.2d 121 (10th Cir.) (revenue/registration issues where separate statutory ban makes registration impossible; distinct context explained)
- Cox v. New Hampshire, 312 U.S. 569 (fee jurisprudence: licensing fees tied to administrative costs may be permissible)
- Murdock v. Pennsylvania, 319 U.S. 105 (striking license tax imposed on exercise of First Amendment rights)
- Cheek v. United States, 498 U.S. 192 (ignorance of the law is generally no defense; discussion of willfulness and mistake-of-law doctrines)