43.05, -87.95
Thomas Mark Barrett (born December 8, 1953) is an American diplomat and politician who has served as the United States ambassador to Luxembourg since 2022. He previously served as the 44th mayor of Milwaukee, Wisconsin from 2004 until 2021.A member of the Democratic Party, he was previously elected to the Wisconsin State Assembly (1984–1989), Wisconsin Senate (1989–1993) and U.S. House of Representatives (1993–2003). On April 6, 2004, Milwaukee elected Tom Barrett as its 40th mayor. He won reelection as mayor in 2008, 2012, 2016 and 2020. After having unsuccessfully sought the Democratic nomination for governor of Wisconsin in 2002, Barrett was the party's nominee for governor in both 2010 and 2012, losing both elections to Scott Walker. When he left office as mayor, Barrett was the longest-serving current mayor of one of the 50 largest cities in the United States.