"Mexico decides its migratory policy in a sovereign way, and migratory cooperation with the United States happens because it's in Mexico's interest," tweeted Secretary of Foreign Relations Luis Videgaray.

ADVERTISEMENT Videgaray's tweet came an hour after Trump used the platform to threaten tying Mexico's record on immigration to the ongoing North American Free Trade Agreement (NAFTA) negotiations.

"Mexico, whose laws on immigration are very tough, must stop people from going through Mexico and into the U.S. We may make this a condition of the new NAFTA Agreement," tweeted Trump.

Mexico, whose laws on immigration are very tough, must stop people from going through Mexico and into the U.S. We may make this a condition of the new NAFTA Agreement. Our Country cannot accept what is happening! Also, we must get Wall funding fast. — Donald J. Trump (@realDonaldTrump) April 23, 2018 In response, Videgaray said, "It would be unacceptable to condition the renegotiation of NAFTA to migratory actions outside this frame of cooperation," he said. In response, Videgaray said, "It would be unacceptable to condition the renegotiation of NAFTA to migratory actions outside this frame of cooperation," he said.

Mexican leaders have intensified their response to Trump over the past month after the U.S. president ordered National Guard troops to support the Border Patrol at the U.S.-Mexico border.