from Canada, Mexico, or an adjacent island pursuant to section 13031(a)(5) of the Consolidated Omnibus Budget Reconciliation Act of 1985 ( 19 U.S.C. 58c(a)(5) ) shall be available until expended. 204. For an additional amount for U.S. Customs and Border Protection—Operations and Support , $39,000,000, to remain available until expended, to be reduced by amounts collected and credited to this appropriation in fiscal year 2019 from amounts authorized to be collected by section 286(i) of the Immigration and Nationality Act ( 8 U.S.C. 1356(i) ), section 10412 of the Farm Security and Rural Investment Act of 2002 ( 7 U.S.C. 8311 ), and section 817 of the Trade Facilitation and Trade Enforcement Act of 2015 ( Public Law 114–25 ), or other such authorizing language: Provided , That to the extent that amounts realized from such collections exceed $39,000,000, those amounts in excess of $39,000,000 shall be credited to this appropriation, to remain available until expended. 205. None of the funds made available in this Act for U.S. Customs and Border Protection may be used to prevent an individual not in the business of importing a prescription drug (within the meaning of section 801(g) of the Federal Food, Drug, and Cosmetic Act) from importing a prescription drug from Canada that complies with the Federal Food, Drug, and Cosmetic Act: Provided , That this section shall apply only to individuals transporting on their person a personal-use quantity of the prescription drug, not to exceed a 90-day supply: Provided further , That the prescription drug may not be— (1) a controlled substance, as defined in section 102 of the Controlled Substances Act ( 21 U.S.C. 802 )