The executive action comes as trade negotiations between Washington and Ottawa collapse, prompting 50 percent US tariffs on $20 billion worth of Canadian goods

US President Donald Trump says he's considering changing the name of Lake Ontario to "Lake America" as a trade war between the United States and Canada escalates.

“We have a Gulf, and we have a lake. Now, all we need is an ocean,” he said, floating another name change for the Atlantic or Pacific ocean.