President Donald Trump threatened to cut foreign aid to Honduras over a caravan of its citizens seeking to illegal enter the U.S. via the Mexico border.

The big Caravan of People from Honduras, now coming across Mexico and heading to our “Weak Laws” Border, had better be stopped before it gets there. Cash cow NAFTA is in play, as is foreign aid to Honduras and the countries that allow this to happen. Congress MUST ACT NOW! — Donald J. Trump (@realDonaldTrump) April 3, 2018

Honduras, Mexico and many other countries that the U.S. is very generous to, sends many of their people to our country through our WEAK IMMIGRATION POLICIES. Caravans are heading here. Must pass tough laws and build the WALL. Democrats allow open borders, drugs and crime! — Donald J. Trump (@realDonaldTrump) April 3, 2018

The President also took aim at the Mexican government, who by and large failed to stop the caravan from trespassing through its territory until the U.S. government began responding officially. Trump has threatened to end NAFTA negotiations and pull out of the deal over the Mexican government’s conduct.

Mexican authorities responded to Trump’s Sunday threat to rebuke NAFTA by pledging to disband the caravan and allow some transmitters to apply for asylum in Mexico. The organizers, however, said many members of the group will continue marching north towards the U.S.-Mexico border where, if they claim asylum and are with a family unit, they legally must be released into the interior of the country.