The US has a trade surplus with Canada, has a higher average tariff, has been the bigger beneficiary of trade, yet Trump has announced tariffs on Canada, to an enormous backlash (and Canadians seriously rethinking their integration in the US economy).
This isn't leverage, or masterful negotiating. It's a hamfisted moron bashing around with absolutely no clue what they're negotiating. Trump withdrew from TPP (you know -- one of those trade agreements that would remove most tariffs), and quickly thereafter announced that he would sure like to join TPP...only on the "US'" terms (which is hilarious because TPP was entirely at the US' terms).
At this point I marvel that anyone seriously puts forth an argument that Trump and his crew of misfits are serious negotiators. They're clowns in a clown show. Trump's great business prowess is that he fucked over so many people -- "negotiating" by refusing to pay them after they did the agreed work -- that anyone of legitimacy refuses to have anything to do with him. It's why his personal lawyer was a real life Saul Goodman. What a farce.