Act of 1978 (5 U.S.C. App.). Institute of american indian and alaska native culture and arts development Payment to the institute For payment to the Institute of American Indian and Alaska Native Culture and Arts Development, as authorized by part A of title XV of Public Law 99–498 ( 20 U.S.C. 4411 et seq.), $9,835,000, which shall become available on July 1, 2018, and shall remain available until September 30, 2019. Smithsonian institution Salaries and expenses For necessary expenses of the Smithsonian Institution, as authorized by law, including research in the fields of art, science, and history