Ann Louise Wagner is an American politician and former diplomat serving as the U.S. representative for Missouri's 2nd congressional district. A member of the Republican Party, she was the United States ambassador to Luxembourg from 2005 to 2009. Her district, based in St. Louis County, is heavily suburban and the state's wealthiest. It includes most of St. Louis's southern and western suburbs as well as some of the northern exurbs in St. Charles County and the northern part of Jefferson County. From Wikipedia