1. Short title This Act may be cited as the Marijuana in Federally Assisted Housing Parity Act of 2018 . 2. Amendments to United States Housing Act of 1937 The United States Housing Act of 1937 is amended as follows: (1) Drug-related criminal activity defined In section 3(b)(9) ( 42 U.S.C. 1437a(b)(9) ), by inserting before the period at the end the following: , except that such term shall not include any such manufacture, sale, distribution, use, or possession of marihuana (as such term is defined in such section) that is in compliance with the law of the State in which such manufacture, sale, distribution, use, or possession takes place . (2) Currently engaging in the illegal use of a controlled substance and drug-related criminal activity defined In section 6 ( 42 U.S.C. 1437d )— (A) in subsection (l), in the last sentence after paragraph (9)— (i) by striking paragraph (5) and inserting paragraph (6) ; and (ii) by inserting before the period at the end the following: , except that such term shall not include any such manufacture, sale, distribution, use, or possession of marihuana (as such term is defined in such section) that is in compliance with the law of the State in which such manufacture, sale, distribution, use, or possession takes place