Open this photo in gallery: Jamieson Greer, President Donald Trump's nominee to be United States Trade Representative, appears before a Senate committee for his pending confirmation on Capitol Hill, in Washington, on Feb. 6.Rod Lamkey/The Associated Press A majority of the U.S. Senate on Wednesday voted to confirm Jamieson Greer as U.S. Trade Representative, putting the veteran of President Donald Trump’s first-term trade wars fully on the job just days ahead of a March 4 deadline for punishing 25 per cent tariffs on imports from Canada and Mexico. With voting on the Senate floor still underway, Greer had secured more…