Mexico was raising sprawling tents on the U.S. border Wednesday as it braced for President Donald Trump to fulfill his pledge to reverse mass migration.

Mexico's president said on Wednesday she has not agreed to accept non-Mexican migrants seeking asylum in the United States, a day after her new U.S. counterpart announced the return of a program to do so.

More than 2,000 migrants from various countries began walking early Monday in southern Mexico hoping to reach the United States despite president Donald Trump’s threats of mass deportations and limiting asylum.

President Claudia Sheinbaum is detaining more migrants, seizing more fentanyl and positioning her country as a key ally against China. But the U.S. stance has shifted, too.

"It's unprecedented," said Ciudad Juarez municipal official Enrique Licon as workers unloaded long metal bracings from tractor trailers parked in the large empty lot yards from the Rio Grande in order to build a tent city for deportees from the United States.

Mexican authorities have begun constructing giant tent shelters in the city of Ciudad Juarez to prepare for a possible influx of Mexicans deported under U.S. President Donald Trump's promised mass deportations.

More than 220 million people across the United States are facing dangerous cold that will also open the door for a potentially historic and crippling winter storm that could deliver snow as far south as Florida and the Gulf of Mexico.

The program that resulted—"Mexico Embraces You"—aims to shelter deported Mexicans, some 5 million of whom are estimated to be living in the United States illegally and thus at risk of being sent back.

Numerous faith leaders across the U.S. say the immigration crackdown launched by President Donald Trump’s new administration has sown fear within their migrant-friendly congregations.

As President Donald Trump cracks down on immigrants in the U.S. illegally, some families are wondering if it is safe to send their children to school.

The Trump administration's removal of the Spanish-language White House website has sparked criticism from Latino leaders and advocacy groups