New York Times: A new television ad scheduled for broadcast on Sunday will call on President Obama to do the right thing to prevent climate change by rejecting the Keystone XL pipeline. Produced and narrated by Tom Steyer, a billionaire hedge fund manager from California, the ad is the latest attempt by his political action committee to put pressure on Mr. Obama and try to counter proponents of the pipeline. Mr. President, youve had real accomplishments when it comes to fighting climate disruption, Mr. Steyer...