; (3) testing standards used by the States referred to in paragraph (1) to evaluate marijuana impairment in traffic crashes, fatalities, and injuries, including any scientific methods used to determine impairment and analyze data; and (4) Federal initiatives aiming to assist States that have legalized marijuana with traffic safety, including recommendations for policies and programs to be carried out by the National Highway Traffic Safety Administration. (c) Report Not later than 1 year after the date of enactment of this Act, the Comptroller General of the United States shall submit to the appropriate committees of Congress a report on the results of the study conducted under subsection (a). 9. Rule of construction (a) In general Conduct in compliance with this Act and the amendments made by this Act— (1) shall not be unlawful; (2) shall not constitute trafficking in a controlled substance under section 401 of the Controlled Substances Act ( 21 U.S.C. 841 ) or any other provision of law; (3) shall not constitute the basis for forfeiture of property under section 511 of the Controlled Substances Act ( 21 U.S.C. 881 ) or section 981 of title 18, United States Code; and (4) shall not be subject to section 280E of the Internal Revenue Code of 1986, relating to expenditures in connection with the illegal sale of drugs. (b) Proceeds The proceeds from any transaction in compliance with this Act and the amendments made by this Act shall not be deemed to be the proceeds of an unlawful transaction under section 1956 or 1957 of title 18, United States Code, or any other provision of law.