Michael Dean "Mike" Crapo (/ˈkreɪpoʊ/ KRAY-poh; born May 20, 1951) is the senior United States Senator from the state of Idaho, in office since 1999. A Republican, he previously served as the United States Representative for Idaho's 2nd congressional district from 1993 to 1999.Born in the city of Idaho Falls, Crapo is a graduate of Brigham Young University and Harvard Law School.