In the heartland, the gun issue is clear-cut, sort of

When the Senate voted this spring on whether to toughen background checks for gun buyers, the two senators in a dozen states voted differently from each other including Iowa's Charles Grassley, a Republican, who voted no, and Tom Harkin, a Democrat, who voted yes. Their constituents, including Phil Roe, 56, of Eldora, Iowa, illustrate why it's so hard for Congress to reach a consensus. Roe, a board member of Iowa Gun Owners PAC, is photographed June 5, 2013 in Waterloo, Iowa. (Liz Martin/Tribune News Service via Getty Images)