| U.S. Special Forces unit | 24 |
| U.S. special investigator | 25 |
| U.S. sports org. | 16 |
| U.S. spy agency | 15 |
| U.S. spy gp. | 12 |
| U.S. spy group | 14 |
| U.S. spy grp. | 13 |
| U.S. spy org. | 13 |
| U.S. spy satellite | 18 |
| U.S. stage group | 16 |
| U.S. stage name | 15 |
| U.S. Star Wars program | 22 |
| U.S. state | 10 |
| U.S. state capital with 13,000 people | 37 |
| U.S. state capital with fewer than 15,000 residents | 51 |
| U.S. state since 1890 | 21 |
| U.S. state that comes first alphabetically: Abbr. | 49 |
| U.S. state where prostitution is partly legal | 45 |
| U.S. state with a secessionist movement | 39 |
| U.S. state with its own elec. power grid | 40 |
| U.S. state with three counties | 30 |
| U.S. statehood entrant: 1907 | 28 |
| U.S. statesman | 14 |
| U.S. statesman and family | 25 |
| U.S. statesman Elbridge ___ | 27 |
| U.S. statesman known as ''The Great Compromiser'' | 65 |
| U.S. statesman who wrote "The Discipline of Power" | 60 |
| U.S. statesman: 18th century | 28 |
| U.S. station name retired in 1972 | 33 |
| U.S. status during the Cuban Missile Crisis | 43 |
| U.S. stealth bomber (usually written with a numeral, but how about a little creative license?) | 94 |
| U.S. Steel founder | 18 |
| U.S. Steel was once its biggest employer | 40 |
| U.S. suffragist Lucy | 20 |
| U.S. surgeon | 12 |
| U.S. Surgeon General under Reagan | 33 |
| U.S. swimming star Janet | 24 |
| U.S. symbol | 11 |
| U.S. symbols | 12 |
| U.S. talent | 11 |
| U.S. tax agency | 15 |
| U.S. taxpayer's dread | 25 |
| U.S. tender | 11 |
| U.S. tennis champ: 1937 | 23 |
| U.S. tennis champ: 1977 | 23 |
| U.S. tennis great | 17 |
| U.S. tennis legend on a 37¢ stamp | 36 |
| U.S. tennis man | 15 |
| U.S. tennis player Oudin | 24 |
| U.S. tennis pro | 15 |
| U.S. tennis star barred from South Africa | 41 |
| U.S. term for a British "saloon" | 42 |
| U.S. terr until 1912 | 20 |
| U.S. terr., 1861-'89 | 24 |
| U.S. terr., 1861-89 | 19 |
| U.S. territory | 14 |
| U.S. territory divided in 1889 | 30 |
| U.S. territory in the Pacific | 29 |
| U.S. territory in W.W. II fighting | 34 |
| U.S. territory that's now two states | 40 |
| U.S. territory until 1889 | 25 |
| U.S. threat level at airports | 29 |
| U.S. time division | 18 |
| U.S. time zone | 14 |
| U.S. trade laws of 1800's | 29 |
| U.S. trading partner | 20 |
| U.S. trading partner, formerly | 30 |
| U.S. trading place | 18 |
| U.S. transit system that spans two states and a district | 56 |
| U.S. Treasurer Rosie | 20 |
| U.S. Treasury agent | 19 |
| U.S. Treasury agents | 20 |
| U.S. Treasury Dept. agcy. | 25 |
| U.S. Treasury sleuths | 21 |
| U.S. treaty ratifier | 20 |
| U.S. Triple Crown winner of 1935 | 32 |
| U.S. troops | 11 |
| U.S. truck maker until the early '50s | 41 |
| U.S. uncle | 10 |
| U.S. uncle's "Friday the 13th" character, to a German yes-man? | 76 |
| U.S. undercover outfit | 22 |
| U.S. union, founded 1935 | 24 |
| U.S. unit | 9 |
| U.S. unit of weight equivalent to 100 pounds | 44 |
| U.S. United Nations representative, 2005-06 | 43 |
| U.S. V.I., e.g. | 15 |
| U.S. vaccine authority | 22 |
| U.S. veep, once | 15 |
| U.S. verse writer | 17 |
| U.S. vice president 1801-1805 | 29 |
| U.S. vice president Barkley | 27 |
| U.S. Vice President or Presidential candidate | 45 |
| U.S. Vice President: 1845–49 | 35 |
| U.S. Vice President: 1925–29 | 35 |
| U.S. Vice President: 1933–41 | 35 |
| U.S. victory site of 1945 | 25 |
| U.S. violinist | 14 |
| U.S. Virgin Is., e.g. | 21 |
| U.S. visa type issued to visiting diplomats | 43 |
| U.S. visitor since 1976 | 23 |