The DoDDS-Europe Model United States Senate (MUSS) conference was held in Heidelberg, Germany April 25 - 27, 2007. Students from DoDDS-E High Schools throughout Europe had the opportunity to represent a U.S. Senator, a member of a special interest group, or a member of the executive branch in a simulation of the Senate legislative process.

The theme was "Freedom's Future: A New Direction for America" to commemorate the Democratic Party winning the majority in the House and Senate. Nuclear proliferation, air pollution, immigration and other hot topics were discussed and debated at the 3 day event.

MUSS is organized cooperatively by the teacher board and the appointed student board. The boards meet in December of each year to organize most of the April conference including creating the theme, designing support materials, setting the debate topics, and suggesting changes to the conference. The students work for months to write, correct, amend and gather sponsors for their bills in preparation for the actual event.