The ultimate scope of the deal could hinge on whether Canadian prime minister Justin Trudeau decides to join the agreement after months of feuding with President Trump.
White House officials said the agreement, centered largely on manufacturing, would help American workers by making it harder for countries like China to ship cheap products through Mexico and then into the United States. Harmonizing labor and environmental rules would also protect U.S. jobs and salaries, the officials said, by making it less attractive for U.S. companies to move operations to Mexico.
A senior administration official acknowledged that it was possible the changes could make certain products, such as automobiles, more expensive for American buyers because the costs that go into production were expected to increase.
A number of key factors remain unresolved in Trump’s effort to replace the North American Free Trade Agreement — with Canada’s role the biggest among them. Trump and Mexican leaders also failed to resolve whether the U.S. tariffs on metals imports will remain in place.
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