The plan, called “Mexico Embraces You,” seeks to reassure undocumented migrants facing expulsion. Some experts question if the government is really ready to reabsorb them.

On Monday, President Trump took action to seal the nation’s southern border and terminate the widely used CBP One app, leaving migrants in Mexico feeling desperate and disheartened.

Few took the president-elect’s combative comments at face value, but they still sent a shudder through a country that the United States has invaded before.

President Claudia Sheinbaum of Mexico also said Donald Trump was ill-informed when he said Mexico was “essentially run by the cartels.”

Unlawful crossings at the U.S.-Mexico border dropped sharply last year. Now, Mexico and countries in Central America are bracing for mass deportations from the U.S. after the Trump administration takes over.

Tens of thousands of people have vanished in northern Mexico, many because of cartel violence. An unlikely partnership offers families a form of closure.