Huffington Post: Opponents of the Keystone XL pipeline have made a bombproof environmental case against project. There is a lot of conjecture about KXL, but facts are facts. Keystone XL is an export pipeline; it will increase global warming emissions; and it will benefit giant oil and gas companies that already have a vice-like grip on our political system.
But thus far opponents of KXL--of which I'm one--have yet to make a political argument against KXL that sticks. After all, KXL has become a political hot potato,...