| U.S.S.R. gold-medal gymnast | 27 |
| U.S.S.R. fugitive, e.g. | 23 |
| U.S.S.R. craft society | 22 |
| U.S.S.R. body of water | 22 |
| U.S.S.R. area goes south | 24 |
| U.S.S. ___, ship in 2000 news | 29 |
| U.S.S. Nautilus, for one | 24 |
| U.S.S. Hornet, in a way | 23 |
| U.S.S. Enterprise, e.g. | 23 |
| U.S.S. Enterprise officer | 25 |
| U.S.S. Enterprise off. | 22 |
| U.S.S. Enterprise defenses | 26 |
| U.S.S. Enterprise counselor | 27 |
| U.S.S. Enterprise command | 25 |
| U.S.P.S. employee's beat | 28 |
| U.S.O., for one: Abbr. | 22 |
| U.S.O. show audience members | 28 |
| U.S.N.A. trainee: Abbr. | 23 |
| U.S.N.A. rank below capt. | 25 |
| U.S.N.A. grad's rank | 24 |
| U.S.N. two-star officer | 23 |
| U.S.N. rank under captain | 25 |
| U.S.N. rank below Capt. | 23 |
| U.S.N. policing groups | 22 |
| U.S.N. junior officer: Abbr. | 28 |
| U.S.N. "police" | 25 |
| U.S.M.C. recruits: Abbr. | 24 |
| U.S.M.C. barracks boss | 22 |
| U.S.M.A., to sportswriters | 26 |
| U.S.C. upperclassmen, e.g. | 26 |
| U.S.–Ont. canals | 23 |
| U.S.–Canada divider | 26 |
| U.S.A.F. operations center | 26 |
| U.S.A.F. Academy cadet | 22 |
| U.S.A., Russia, et al. | 22 |
| U.S.A.'s best customer | 26 |
| U.S.A. to France, in 1918 | 25 |
| U.S.A. radio initials abroad | 28 |
| U.S.A. or U.S.N. officer | 24 |
| U.S.: county :: U.K. : __ | 25 |
| U.S./Mexico crossing site | 25 |
| U.S./Mexico border city | 23 |
| U.S./Mex./Can. commerce pact | 28 |
| U.S./Gr. Brit. separator | 24 |
| U.S./Canadian defense system | 28 |
| U.S./Canada's ___ Canals | 28 |
| U.S./Canada's __ Canals | 27 |
| U.S./Canada partnership | 23 |
| U.S./Canada defense grp. | 24 |
| U.S.-U.S.S.R. negotiations | 26 |
| U.S.-U.S.S.R. breather | 22 |
| U.S.-Mexico border city | 23 |
| U.S.-Mex.-Can. concordat | 24 |
| U.S.-Mex.-Can. commerce pact | 28 |
| U.S.-Croatian inventor | 22 |
| U.S.-Canadian defense acronym | 29 |
| U.S.-Canada defense letters | 27 |
| U.S.-Canada defense grp. | 24 |
| U.S.-Canada defense acronym | 27 |
| U.S.-Canada border lake | 23 |
| U.S.-Can. defense org. | 22 |
| U.S.-born Jordanian queen | 25 |
| U.S.-backed investment | 22 |
| U.S., Latin Amer., etc. | 23 |
| U.S.'s Ryder Cup foe | 24 |
| U.S. writer: 1871–1945 | 29 |
| U.S. writer-anthropologist | 26 |
| U.S. writer James et al. | 24 |
| U.S. writer Dalton ___ | 22 |
| U.S. writer and lecturer | 24 |
| U.S. World Heritage site | 24 |
| U.S. workplace watchdog | 23 |
| U.S. Women's Open org. | 26 |
| U.S. weather satellite | 22 |
| U.S. warship in 1989 news | 25 |
| U.S. voters since 1920 | 22 |
| U.S. visitor since 1976 | 23 |
| U.S. victory site of 1945 | 25 |
| U.S. vice president Barkley | 27 |
| U.S. vice president 1801-1805 | 29 |
| U.S. vaccine authority | 22 |
| U.S. union, founded 1935 | 24 |
| U.S. undercover outfit | 22 |
| U.S. Treasury Dept. agcy. | 25 |
| U.S. trade laws of 1800's | 29 |
| U.S. threat level at airports | 29 |
| U.S. territory until 1889 | 25 |
| U.S. territory in the Pacific | 29 |
| U.S. terr., 1861-'89 | 24 |
| U.S. tennis player Oudin | 24 |
| U.S. tennis champ: 1977 | 23 |
| U.S. tennis champ: 1937 | 23 |
| U.S. taxpayer's dread | 25 |
| U.S. swimming star Janet | 24 |
| U.S. statesman: 18th century | 28 |
| U.S. statesman Elbridge ___ | 27 |
| U.S. statesman and family | 25 |
| U.S. statehood entrant: 1907 | 28 |
| U.S. Star Wars program | 22 |
| U.S. special investigator | 25 |