The Trump administration has decided to hold off on imposing most of its tariffs on imported steel and aluminum until at least June 1.

NPR reported that tariffs were scheduled to take effect at 12:01 a.m. Tuesday (May 1) on imports from Canada, the largest U.S. supplier of steel and aluminum, as well as Mexico, Argentina, Australia, Brazil and the EU.

A source familiar with the decision says the administration has reached an agreement in principle with Australia, Argentina and Brazil, which may avoid the need for tariffs against those countries altogether. Talks continue with Canada, Mexico and the EU.

Trump initially ordered the tariffs — 25% on imported steel and 10% on imported aluminum — in March, ostensibly to protect domestic industries, which the president called critical to national security.

But before the levies took effect, the administration granted temporary waivers to most major U.S. allies.

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