United States v. Justin Halter, 988 F.3d 1042

Feb. 1, 2019: Halter’s wife and her boyfriend called police saying Halter (who was watching their 4‑year‑old) was on the phone; the mother heard the child screaming, learned Halter had stolen a firearm, and heard Halter threaten to shoot anyone who tried to get the child.
Deputy Richmond, aware of Halter and his address, was dispatched for a welfare check; dispatch warned Halter might leave in a black Impala.
Richmond followed a red sedan he believed was Halter’s; he initially did not use lights/siren but later activated emergency lights and approached on foot for visibility and to conduct the welfare check.
Halter yelled threats (“you’re all going to die”), acted erratically, refused commands, exited the car with his daughter, and officers recovered a gun from a holster on his hip; officers removed the child and arrested Halter.
District court denied Halter’s suppression motion, concluding any seizure was justified under the community caretaker exception and officers had probable cause based on Halter’s threats and conduct.
Halter pleaded guilty to being a felon in possession. At sentencing the court applied a 4‑level enhancement under U.S.S.G. §2K2.1(b)(6)(B) (possession in connection with another felony — citing Iowa Code §724.4(1) and United States v. Walker), denied a variance for alleged sentencing disparity, and imposed 71 months; the Eighth Circuit affirmed.

Issue	Halter's Argument	Government's Argument	Held
Whether officers’ approach/stop was a Fourth Amendment seizure and, if so, whether suppression was required	The stop/seizure was unlawful and the gun was fruit of that seizure	The encounter was a community‑caretaker welfare check justified by reports of a screaming child and threats; officers’ actions were reasonable and later escalation was caused by Halter	Court assumed arguendo seizure but held community‑caretaker exception applied; suppression denied
Whether the 4‑level §2K2.1(b)(6)(B) enhancement was erroneous or created unwarranted disparity	Enhancement overstates culpability; argued disparity because other states treat similar conduct as aggravated misdemeanor	Enhancement applies under Walker and was reasonable given the danger posed by a firearm during the welfare check	Enhancement upheld; district court considered §3553(a) and did not abuse discretion; within‑Guidelines 71‑month sentence affirmed

United States v. Sanders, 956 F.3d 534 (8th Cir. 2020) (articulates community caretaker exception standard)
United States v. Cook, 842 F.3d 597 (8th Cir. 2016) (activating emergency lights and approaching parked vehicle may not constitute a seizure)
United States v. Mabery, 686 F.3d 591 (8th Cir. 2012) (spotlighting a parked vehicle not a seizure)
United States v. Dockter, 58 F.3d 1284 (8th Cir. 1995) (approaching parked vehicle with warning lights not a seizure)
United States v. Walker, 771 F.3d 449 (8th Cir. 2014) (application of U.S.S.G. §2K2.1(b)(6)(B) enhancement)
Gall v. United States, 552 U.S. 38 (2007) (reasonableness review and deference to within‑Guidelines sentences)
United States v. Hess, 829 F.3d 700 (8th Cir. 2016) (presumption of reasonableness for within‑Guidelines sentences)