The U.S. actually has a huge trade surplus in services – that's where Canada should hit

Open this photo in gallery: President Donald Trump arrives on the South Lawn of the White House, in Washington, on Feb. 10.Jose Luis Magana/The Associated Press Tae Hoon Oum is a professor at the University of British Columbia's Sauder School of Business, and president of the World Conference on Transport Research Society. What ultimately influenced U.S. President Donald Trump's decision last week to delay the tariffs he planned to impose on Canadian imports was arguably Canada's announcement of targeted retaliatory tariffs on U.S. exports, strategically designed to affect Republican-leaning states the most. But the measures that may be enough to…