FILE - This June 5, 2012 file photo Senate Appropriations Committee Chair Sen. Barbara Mikulski, D-Md. speaks during a news conference on Capitol Hill in Washington. On the face of it, one of the most powerful pairings in Washington is a hopeless mismatch _ a former social worker and liberal Democrat from Baltimore's working-class Fells Point neighborhood and an old-school, cigar-chomping GOP conservative raised in a dry county in the mountains of southeastern Kentucky. But in a bitterly divided Congress, the odd couple of Sen. Barbara Mikulski and Rep. Harold Rogers is a rare bipartisan success story.(AP Photo/J. Scott Applewhite, File)