Sen. Mary Landrieu, D-La., chair of the Senate Energy and Natural Resources Committee, and the Keystone XL oil pipeline bill sponsor, walks from a news conference on Capitol Hill in Washington, Tuesday, Nov. 18, 2014. The U.S. Senate has rejected a proposal to fast-track the approval of the controversial Keystone XL pipeline. The vote was 59-41, one short of the 60 necessary for passage.