U.S. President Donald Trump said 25% tariffs on Canada and Mexico are on track to go into place on March 4, and said he would impose an additional 10% tax on Chinese imports, moves that would deepen his fight with the largest U.S. trading partners.

The president paused the sweeping duties on Canada and Mexico on Feb. 3 for one month after both countries¡¯ leaders announced new border security measures. But the U.S. president had recently sowed confusion about whether they would take effect once the grace period ended.

Trump said Thursday in a social media post that drugs from the U.S.¡¯ North American neighbors are still entering ¡°at very high and unacceptable levels.¡±