CFR›Title 2›Subtitle B›Chapter IV›Part 401 ContainsSections 401.1–401.2CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 PART 401—BUY AMERICA PREFERENCES FOR INFRASTRUCTURE PROJECTS Sections 401.1 § 401.1 What does this part do? 401.2 § 401.2 Waivers. Authority5 U.S.C. 301; Pub. L. 117-58, 135 Stat. 1294; 2 CFR part 184; 2 CFR part 200.Source89 FR 68323, Aug. 26, 2024, unless otherwise noted. Previous 400 Part 400—Uniform Administrative Requirements, Cost Principles, and Audit Requirements for Federal Awards Next 415 Part 415—General Program Administrative Regulations