| U.S. air-to-air missiles | 24 |
| U.S. airport regulator | 22 |
| U.S. Airways competitor | 23 |
| U.S. alien's subj. | 22 |
| U.S. ally since '48 | 23 |
| U.S. Ambassador in Moscow | 25 |
| U.S. anthem contraction | 23 |
| U.S. anthem-starting words | 26 |
| U.S. anti-trafficking grp. | 26 |
| U.S. architects' org. | 25 |
| U.S. Army attack helicopter | 27 |
| U.S. Army award: Abbr. | 22 |
| U.S. Army Corps member | 22 |
| U.S. army post in Kentucky | 26 |
| U.S. Army training branch | 25 |
| U.S. Army Web-site ending | 25 |
| U.S. artificial satellite | 25 |
| U.S. athlete: 1888-1953 | 23 |
| U.S. attack helicopter | 22 |
| U.S. atty. gen. in 1962 | 23 |
| U.S. author and family | 22 |
| U.S. author: 1909–55 | 27 |
| U.S. ballistic missile | 22 |
| U.S. base in Cuba, briefly | 26 |
| U.S. base in Cuba, informally | 29 |
| U.S. beverage since 1923 | 24 |
| U.S. bond market purchase | 25 |
| U.S. brand retired in 1972 | 26 |
| U.S. Brig Niagara's port | 28 |
| U.S. broadcaster overseas | 25 |
| U.S. business economist | 23 |
| U.S. Cabinet department | 23 |
| U.S. Cabinet divisions | 22 |
| U.S. capital and environs | 25 |
| U.S. Capitol Building area | 26 |
| U.S. Capitol's vicinity | 27 |
| U.S. Cellular Field team | 24 |
| U.S. chain stores since 1985 | 28 |
| U.S. chain-store pioneer | 24 |
| U.S. chief justice 1836-64 | 27 |
| U.S. Chief Justice, 1936-65 | 27 |
| U.S. chief justice, 1953-69 | 27 |
| U.S. citizen since 1845 | 23 |
| U.S. civil rights promoter | 26 |
| U.S. Civil War starting point | 29 |
| U.S. claim-settling dept. | 25 |
| U.S. Coast Guard woman | 22 |
| U.S. code and cipher grp. | 25 |
| U.S. coin motto starter | 23 |
| U.S. colony, symbolically | 25 |
| U.S. commerce watchdog | 22 |
| U.S. composer and family | 24 |
| U.S. composer Charles ___ | 25 |
| U.S. composer Ethelbert | 23 |
| U.S. composer Roger ___ | 23 |
| U.S. composer: 1874-1954 | 24 |
| U.S. composer: 1896-1985 | 24 |
| U.S. conductor-composer | 23 |
| U.S. cosmetics overseer | 23 |
| U.S. cousin of the BBC | 22 |
| U.S. critic-poet: 1899-1979 | 27 |
| U.S. Davis Cup captain | 22 |
| U.S. defense strategizer | 24 |
| U.S. Dept. of Justice raiders | 29 |
| U.S. diplomat W. __ Harriman | 28 |
| U.S. disaster relief org. | 25 |
| U.S. disease-prevention org. | 28 |
| U.S. document publisher | 23 |
| U.S. doubles co-champ: 1976 | 27 |
| U.S. druggists' org. | 24 |
| U.S. eavesdropping org. | 23 |
| U.S. econ. indicator, once | 26 |
| U.S. economic yardstick | 23 |
| U.S. editor: 1863–1930 | 29 |
| U.S. electrical genius | 22 |
| U.S. electrical pioneer | 23 |
| U.S. electrician and inventor | 29 |
| U.S. emissions controller | 25 |
| U.S. engineer: 1820–87 | 29 |
| U.S. expansionists' dream | 29 |
| U.S. explorer in space | 22 |
| U.S. family of painters | 23 |
| U.S. film critic-author | 23 |
| U.S. financier and bon vivant | 29 |
| U.S. financier-philanthropist | 29 |
| U.S. flag designer: 1818 | 24 |
| U.S. flying branch: Abbr. | 25 |
| U.S. force in Vietnam: abbr. | 28 |
| U.S. foreign aid, mostly | 24 |
| U.S. fort where gold is kept | 28 |
| U.S. gas brand of yore | 22 |
| U.S. general and tennis ace | 27 |
| U.S. general's command | 26 |
| U.S. govt. broadcast service | 28 |
| U.S. govt. broadcaster | 22 |
| U.S. Grant's adversary | 26 |
| U.S. Grant's home state | 27 |
| U.S. green card distributor | 27 |
| U.S. health promoter: Abbr. | 27 |
| U.S. high jumper Acuff | 22 |