Sensitive places are locations where governments can prohibit firearms without violating the Second Amendment, including schools, government buildings, courthouses, and polling places. In District of Columbia v. Heller, the Supreme Court noted that "longstanding prohibitions on the carrying of firearms in sensitive places such as schools and government buildings" remain constitutional. The 2022 Bruen decision cautioned that while the historical record shows few 18th- and 19th-century sensitive places, those that existed—legislative assemblies, polling places, courthouses—established the category''s legitimacy. However, Bruen rejected New York''s attempt to declare all of Manhattan a sensitive place simply because it''s crowded and policed. In January 2026, the Fourth Circuit upheld Maryland''s firearms restrictions in government buildings, school grounds, and mass transit facilities, citing historical analogues in private railroad regulations. Federal courts continue litigating which modern locations qualify as sensitive places, with challenges ongoing against New Jersey''s law designating 25 such locations.