U
Underpayment defined, §1900
Undertakes to produce a crop, defined, §1120
Unearned income, SSI, §§2136-2137
Unemployment compensation agencies, findings as evidence, §1731
Uniformed service member, defined, §949
Union records as evidence, §1729
United States:
- citizens working outside U.S., in ministry, §1246
- citizenship, evidence, §1725
- income earned outside U.S. from a trade or business, §1245
- non-payment provisions, alien, §§1845-1846
- totalization agreements, §107, §216
- work outside, §§961-966, §§1823-1828
United States Citizen Identification Card, Form I-197, §1725
U.S. Savings Bonds, conservation of benefits by representative payee, §1619
Unnegotiated checks, underpayment, §1900
Unpaid amount due a living person, §1901