Huffington Post: Over the next few months, the State Department will examine whether the proposed Keystone XL pipeline running from the Alberta tar sands oil fields to the Texas Gulf Coast is in America's national interest. To answer that question, you have to decide what kind of future you want for our country. Do you want America to create cars that can go twice as far on a gallon of gas, employ 150,000 workers to build, and cut our oil use by more than 3 million barrels a day? Or do you want America to...