Domingo Cavallo

Domingo Felipe Cavallo (born July 21, 1946) is an Argentine economist and politician. Between 1991 and 1996 he was Economic Ministry of Argentina during Carlos Menem presidency and again for a short time in 2001 during the Fernando de la Rúa presidency. He was known for making the U.S. dollar of legal use in Argentina. 
He unsuccessfully ran for President of Argentina in 1999. From 1989 to 1991, he was the Minister of Foreign Affairs during the Carlos Menem presidency.