CFR›Title 7›Subtitle B›Chapter II›Part 273›Subpart B ContainsSections 273.3–273.4CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart B—Residency and Citizenship Sections 273.3 § 273.3 Residency. 273.4 § 273.4 Citizenship and alien status. Previous A Subpart A—General Rules Next C Subpart C—Education and Employment