CFR›Title 7›Subtitle B›Chapter II›Part 273›Subpart A ContainsSections 273.1–273.2CorpusDaily eCFRDisplayed edition2026-05-08Last updated2026-05-08 Subpart A—General Rules Sections 273.1 § 273.1 Household concept. 273.2 § 273.2 Office operations and application processing. Next B Subpart B—Residency and Citizenship