As part of the deal, U.S. will review effectiveness of Mexico’s immigration policies after 90 days.

The deal the U.S. and Mexico struck to prevent the U.S. from imposing tariffs largely reaffirms the countries’ commitments to existing measures on immigration but will allow Washington to keep up pressure on Mexico. The deal reached late Friday included a provision that former diplomats and analysts said reinforces the idea that the U.S. will continue to use tariffs as leverage: The U.S. will review the effectiveness of Mexico’s immigration policies after 90 days. “Unless we really solve the immigration issue in a way that’s intelligent and that respects human rights, the threat of tariffs will always be present, as long as President Trump is in office,” said Gerónimo Gutiérrez, who served as Mexico’s ambassador to the U.S. for the last two years of the administration of former Mexican President Enrique Peña Nieto. Under Friday’s deal, Mexico agreed to increase enforcement to curb migration from Central America. Mexican officials had spent much of the week in Washington talking about the steps already taken at Mexico’s southern border with Guatemala, including plans to deploy 6,000 troops from its newly established National Guard. In a tweet Saturday evening, just before a rally in Tijuana planned by the Mexican government to celebrate the deal, Mexican President Andrés Manuel López Obrador wrote that he had spoken to President Trump on the phone.

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