WASHINGTON — TransCanada Corp. on Friday reapplied to the U.S. State Department for a presidential permit to build the controversial Keystone XL oilsands pipeline, immediately triggering a new fight with opponents over the scope of a coming environmental impact study into the project. In an interview with Postmedia News, TransCanada executive Alex Pourbaix said the Calgary-based company expects the Obama administration’s review of Keystone XL to be limited to the new rerouted portion of the pipeline through Nebraska. “Certainly our expectation is that the only required new review would be on the actual reroute itself . . . What we...