CATCH ME UP
Trump floated renaming Lake Ontario to Lake America as trade tensions with Canada escalated.
Canada responded to U.S. tariffs by imposing retaliatory duties on about $20 billion of American goods.
Trade talks broke down as both sides traded threats and sharper rhetoric.
Canadian officials warned of severe economic pressure on integrated industries and supply chains.
Why it mattersEscalating trade disputes between the US and Canada could severely impact cross-border commerce and diplomatic relations.
More context
Trump also accused Canadian Prime Minister Mark Carney of lying about French-language protections.