When President Obama announced he was killing the Keystone XL pipeline, he said he was agreeing with the State Department’s assessment that the pipeline from Canada “would not serve the national interests of the United States.†The fact is that it would not have benefitted the personal financial interests of friend and economic mentor, Warren Buffett, who can rest assured that oil from Canada and the nearby Bakken formation in North Dakota will continue to be transported by a railroad he owns. As Investor’s Business Daily noted in a 2011 editorial: Killing the Keystone XL pipeline may help one of...