Trump slapped 50% tariffs on a wide range of Canadian imports, bad news for carmakers, drinkers, and anyone hoping for stable North American trade.

• The tariffs hit cars, alcohol, and dairy, and take effect in 30 days, leaving room for a deal.
• Canada cancelled the joint ribbon-cutting for the new Detroit–Windsor bridge in protest.
• The White House says Canada gives Europe better access to its dairy market than the US gets.
• Using tariffs as a punishment for unrelated grievances makes it useless as a reason for companies to build factories here.
• Manufacturing jobs have fallen under Trump after rising sharply in the prior years.

Outlook: Talks are still open, so expect a month of hard bargaining before the tariffs actually bite.