Canadian Press: The move came just two days after a Republican rout in the U.S. midterm elections left Prentice at the helm of a ministry whose biggest file has effectively been shelved. The Conservatives have hitched their policy on reducing greenhouse-gas emissions to that of the Obama administration in Washington, arguing a continental approach is required given the two countries’ tight trading relationship. But after the midterms, any expectation of American movement on the file has been all but eliminated…