How disappointed will Republicans be to hear Barack Obama’s veto threat on bills moving through Congress to rein in the EPA? Not very. It isn’t the first time the White House has issued the threat, but with one of the bills coming from his own side of the aisle, it’s starting to sound more like a plea to keep from being put in that position: The Obama administration Wednesday repeated its threat to veto legislation that would curb its ability to regulate greenhouse gases. Environmental Protection Agency Administrator Lisa Jackson said that the White House continues to oppose any efforts...