1. Short title This Act may be cited as the Keep Americans Safe Act . 2. Definitions Section 921(a) of title 18, United States Code, is amended by inserting after paragraph (29) the following: (30) The term large capacity ammunition feeding device — (A) means a magazine, belt, drum, feed strip, helical feeding device, or similar device, including any such device joined or coupled with another in any manner, that has an overall capacity of, or that can be readily restored, changed, or converted to accept, more than 10 rounds of ammunition; and (B) does not include an attached tubular device designed to accept, and capable of operating only with, .22 caliber rimfire ammunition. (31) The term qualified law enforcement officer has the meaning given the term in section 926B. . 3. Restrictions on large capacity ammunition feeding devices (a) In general Section 922 of title 18, United States Code, is amended by inserting after subsection (u) the following: (v) (1) It shall be unlawful for a person to import, sell, manufacture, transfer, or possess, in or affecting interstate or foreign commerce, a large capacity ammunition feeding device. (2) Paragraph (1) shall not apply to the possession of any large capacity ammunition feeding device otherwise lawfully possessed on or before the date of enactment of the Keep Americans Safe Act . (3) Paragraph (1) shall not apply to— (A) the importation for, manufacture for, sale to, transfer to, or possession by the United States or a department or agency of the United States or a State or a department, agency, or political subdivision of a State, or a sale or transfer to or possession by a qualified law enforcement officer employed by the United States or a department or agency of the United States or a State or a department, agency, or political subdivision of a State for purposes of law enforcement (whether on or off-duty), or a sale or transfer to or possession by a campus law enforcement officer for purposes of law enforcement (whether on or off-duty)