42 U.S. Code § 2201a - Use of firearms by security personnel
In this section, the terms “handgun”, “rifle”, “shotgun”, “firearm”, “ammunition”, “machinegun”, “short-barreled shotgun”, and “short-barreled rifle” have the meanings given the terms in section 921(a) of title 18.
A person that receives, possesses, transports, imports, or uses a weapon, ammunition, or a device under subsection (b) of this section shall be subject to a background check by the Attorney General, based on fingerprints and including a background check under section 103(b) of the Brady Handgun Violence Prevention Act (Public Law 103–159; 18 U.S.C. 922 note) to determine whether the person is prohibited from possessing or receiving a firearm under Federal or State law.
This section takes effect on the date on which guidelines are issued by the Commission, with the approval of the Attorney General, to carry out this section.
Guidelines to carry out this section, referred to in subsec. (d), were issued effective Sept. 11, 2009, see 74 F.R. 46800.