The Globe and Mail reports in its Friday edition that trade negotiations once relied on the belief that trade barriers were mutually detrimental. The Globe's Tony Keller writes that countries would lower their tariffs in exchange for others doing the same. That is now ancient history. Give-and-take has become take-and-take. The White House respects the strongest -- that would be China -- while leaning on erstwhile allies. Mr. Trump has repeatedly singled out Canadian industries. His cabinet members have echoed him, saying that they don't understand why the U.S. is buying cars, steel or other manufactured goods from Canada. Mr. Greer underlined that in interviews this week. Asked on Fox News about trade talks with Canada, he said that the goal is "we really want to focus on reshoring here. We want to have production here. We don't necessarily want to be dependent on China, Canada or anybody else for things like cars." As for the U.S.-Mexico-Canada Agreement, he said, "I'm having separate negotiations with Canada and Mexico," and that at the end of the day "maybe we'll have separate protocols with Canada and Mexico." He cited the auto sector as "a big problem" because "we want to be making those things here." Buckle up.