FILE - In this July 10, 2013 file photo, Sen. Susan Collins, R-Maine, left, heads to the floor of the Senate on Capitol Hill in Washington. The accomplishments are few, the chaos plentiful in the 113th Congress, a discourteous model of divided government. "Have senators sit down and shut up, okay?’’ Senate Majority Leader Harry Reid blurted out as lawmakers milled about noisily at a time Sen. Susan Collins was trying to speak. There was political calculation even in that. Democrats knew the Maine Republican was about rip into her own party’s leadership.