Question: What is the name of this American politician, member of the Minnesta Democratic-Farmer-Labor Party, the U.S. Representative for Minnesota's 7 congressional district, and the most senior representative from Minnesota, representing Dewey Township, Roseau County, Minnesota?  
Sentence (from "Dewey Township, Roseau County, Minnesota"): Dewey Township is a township in Roseau County, Minnesota, United States.
Relevant evidence: Yes