After fighting hard for seven years, TransCanada (NYSE: TRP) lost its political battle to build the Keystone XL Pipeline in 2015 when the Obama Administration officially rejected it due to climate-change concerns. That seemingly put an end to a project that would have moved 830,000 barrels of oil per day from Canada's oil sands region to refineries in Texas.However, the Trump Administration resurrected the project by reversing that decision and approving the necessary permit last year.