President Barack Obama on Tuesday, as promised, vetoed a Republican bill approving the Keystone XL oil pipeline, leaving the long-debated project in limbo for another indefinite period. The U.S. Senate Majority Leader Mitch McConnell, after receiving Obama’s veto message, immediately countered by announcing the Republican-led chamber would attempt to override it by March 3. That is unlikely. Despite their majority, Republicans are four votes short of being able to overturn Obama’s veto. Read more at Reuters…