"What [the deal] ultimately says to the Americans is, 'If you keep treating us badly, if you keep slapping tariffs on our key sectors like steel, aluminum, cars, lumber, if you refuse to renew the #CUSMA deal, you're going to push #Canada into the arms of countries you don't like.'"
https://www.cbc.ca/news/politics/trump-tariffs-canada-trade-negotiation-cusma-usmca-9.7132301

While Canada's economy is far more reliant on exports to the U.S. than vice versa, Canadian negotiators have crucial ammunition in their efforts to land a trade deal that reduces or eliminates tariffs imposed by U.S. President Donald Trump.
After Being Ruled Illegal, Many Ask: Where Are the Refunds From Trump’s Tariffs?
Some small business owners worry the Trump administration will drag out the process in the courts for as long as it can.8/20: Core Element 2: Business Raid Tactics. Classic corporate raiding: identify leverage points, open bid far outside normal range, create artificial time pressure, extract before the target organizes a defense. Sound familiar? Tariff announcements. Alliance ultimatums. The sixty-day Iran deadline. Shock and extract.