New York Times: The political ground may be shifting under the Keystone XL pipeline. Just weeks ago, the smart money in Washington had President Obama approving the cross-border oil pipeline later this year, perhaps balanced with a package of unrelated climate change measures. The seemingly inevitable decision would leave the pipelines opponents a group that includes a large number of Mr. Obamas most ardent supporters and generous donors dispirited and disillusioned by what one called the presidents half-a-loaf...