In a given week, Congress might vote on everything from international diplomacy to wildlife conservation to internet regulation. How do individual members of Congress become experts on each of these subjects? The answer is: they don't. Congress divides its work load among committees. This week, how does the committee system work, which committees wield the most influence, and how do members of Congress jockey for committee seats? We speak with Garrison Nelson, a professor of political science at the University of Vermont.