WASHINGTON — Freshman Minnesota Rep. Keith Ellison has become a de facto American emissary, meeting with foreign policy makers both here and abroad to preach peace and democracy. Ellison, a Democrat, had already developed an international reputation when he took his oath of office on the Quran last year. In his first term in office, he's built on that with congressional trips, State Department functions and internationally themed town hall meetings in his district. "Peace is a key component of what I'm here to do," he said in a recent interview.