How long has the U.S. had diplomatic relations with Italy?
List of ambassadors of the United States to Italy
Since 1840, the United States has had diplomatic representation in the Italian Republic and its predecessor nation, the Kingdom of Italy, with a break in relations from 1941 to 1944 while Italy and the U.S. were at war during World War II. The U.S. Mission to Italy is headed by the Embassy of the United States in Rome, and also includes six consular offices.
Italy–United States relations
Christian Democrat Prime Minister Alcide De Gasperi (1945–1953) enjoyed considerable support in the US, where he was seen as the man who could oppose the rising tide of Communism – in particular the PCI, which was the biggest communist party in a Western European democracy. In January 1947 he visited the US. The chief goals of the trip were to soften the terms of the pending peace treaty with Italy, and to obtain immediate economic assistance. His ten-day tour, engineered by media mogul Henry Luce – the owner of Time Magazine – and his wife Clare Boothe Luce the future ambassador to Rome, was viewed as a media "triumph," prompting positive comments of a wide section of the American press.