Under threat of crippling U.S. tariffs, Mexico said it had reduced the flow of migrants arriving at its northern border by 56% in three months.

Foreign Secretary Marcelo Ebrard said he believed Mexico’s strategy of cracking down on illegal migration with a National Guard deployment, investment in Central America and allowing the U.S. to make more asylum seekers wait in Mexico was enough to avert President Donald Trump’s threat to impose tariffs on all Mexican imports.