The US is the world's largest domestic economy. Trade with all nations around the world is 24% of the USA's GDP. You could shut it all down and the country would probably enter a mild recession while the rest of the world would face complete economic collapse. For example, 67% of Canada's GDP is reliant on the United States in some way.
The US has an insane amount of leverage. Leaders in Canada, Europe, etc talk a big game but then ultimately talk to an economist and realize they have to come to the table. That's why these leaders keep announcing things and then walking them back.
The US has an insane amount of leverage. Leaders in Canada, Europe, etc talk a big game but then ultimately talk to an economist and realize they have to come to the table. That's why these leaders keep announcing things and then walking them back.