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Good morning.

Here’s what you need to know:

Nafta without Canada?

• The U.S. and Mexico have agreed to revise key parts of the North American Free Trade Agreement, leaving Canada’s role in the three-country pact uncertain.

President Trump threatened on Monday to impose vehicle tariffs on the U.S.’ northern neighbor if it did not “negotiate fairly.” American lawmakers reacted with confusion and concern, uncertain if the agreement was legal or advisable, and some business leaders said Canada’s inclusion was crucial.

The question now becomes whether a trilateral accord becomes a bilateral one, or whether Mr. Trump’s threats pressure Canada to return to the negotiating table and accede to many of his demands. The Canadian foreign minister will be in Washington today for talks.