MURPHY, Circuit Judge. The Armed Career Criminal Act increases the sentence for felons who possess firearms from a 10-year maximum to a 15-year minimum if the defendant has three prior convictions that qualify as “violent felonies.” 18 U.S.C. § 924(a)(2), (e). The Act defines “violent felony” to include “burglary.” Id. § 924(e)(2)(B)(ii). The Supreme Court has long used a “categorical approach” to determine whether a state burglary conviction counts as a conviction for “burglary” under the Act—an approach some Justices have come to recognize is “difficult to apply.” Quarles v. United States, 139 S. Ct. 1872, 1881 (2019) (Thomas, J., concurring); cf. United States v. Burris, 912 F.3d 386, 390 (6th Cir. 2019) (en banc) (principal op.). This case shows how the difficulties answering this esoteric legal question can affect real people’s lives. In 2007 a jury convicted David Brown of being a felon in possession of a firearm in violation of 18 U.S.C. § 922(g). United States v. Brown, 443 F. App’x 956, 958 (6th Cir. 2011). At that time our caselaw treated Brown’s three Tennessee aggravated-burglary convictions as violent felonies, so we upheld his 180-month sentence under the Act. Id. at 959– 60. Years later the parties agreed that changes to our caselaw showed that Brown’s burglary convictions did not, in fact, qualify as violent felonies. The district court thus granted Brown relief under 28 U.S.C. § 2255. He was resentenced and released from prison. Since his release, however, the Supreme Court has intervened and changed our caselaw yet again. While Brown says that his convictions still do not qualify as violent felonies, we disagree. So we must reverse the district court’s decision granting Brown relief under § 2255 and remand for the court to reinstate his original sentence.