Trump tries to betray Canadians here. When you make negotiations and then at the last second try to worsen the terms, you are not acting in good faith. This is a consistent theme with Trump: he wants to take advantage of you. This is a de-facto mafia system. The "art of the deal" is the mafia way. You can see this with Iran too - Trump negotiates, then attacks. Then fake-negotiates, attacks again (and loses anyway). The guy is a problem for the whole world.