 In 1984, Ambassador Guerra-Mondragón was assigned on a detail from the Department of State as Deputy Program Director for Latin America and the Caribbean of the National Democratic Institute for International Affairs in Washington, DC, where he served until 1986.In that year, he became President of TKC International Incorporated in Washington, D.C..In 1994, he was appointed by President Clinton as a Commissioner of the American Battle Monuments Commission in Washington, DC.