Section 1 Preemption of State laws preventing a major city from regulating firearms-related conduct in the city that occurs in or affects interstate or foreign commerce
In general— If a law or rule of a major city, pertaining to conduct in the city that is in relation to firearms and that occurs in or affects interstate or foreign commerce, conflicts with the constitution, or a law or regulation, of the State in which the city is located, the former shall control.
Definitions— In subsection (a):
Firearm— The term “firearm” has the meaning given in section 921(a)(3) of title 18, United States Code.
Major city— The term “major city” means a city that has a population of at least 500,000 inhabitants, as determined by the most recent decennial population census conducted by the Bureau of the Census.
State— The term “State” means the 50 States, the District of Columbia, Puerto Rico, the United States Virgin Islands, Guam, the Northern Mariana Islands, and American Samoa.