Sen. Mary Landrieu (D-La.) and other supporters of the Keystone XL oil pipeline are stuck at 59 votes — one vote shy of the supermajority they need to move their bill forward on Tuesday. Sens. Carl Levin (D-Mich.) and Jay Rockefeller (D-W.Va.) said Monday that they would vote against moving forward with the legislation, making it unclear whether supporters had a path to the magic number of 60. Rockefeller had appeared to be one of the last possible converts Monday evening, and supporters were pressuring the retiring senator to join their side. But he told reporters on Monday that he...