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.

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.

"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.

By Lizbeth Diaz, Laura Gottesdiener and Alexandra Ulmer TIJUANA, Mexico (Reuters) - Nidia Montenegro fled violence and poverty at home in Venezuela, survived a kidnapping as she traveled north into Mexico,

President Trump took action to close the nation’s southern border and terminate a widely used app. Many migrants expressed despair, and some moved to cross the border anyway.

Mexico is readying emergency facilities in multiple cities to house the thousands of people Donald Trump is expected to return to the country as part of his planned nationwide campaign of mass deportations.

TIJUANA, México (AP) — Un grupo de deportados arrestados en la que podría ser una de las primeras redadas de la nueva administración de Donald Trump llegó el martes por la noche a Tijuana, en el extremo occidental de la frontera entre México y Estados Unidos.

TIJUANA, Mexico (AP) — They came from Haiti, Venezuela and around the world, pulling small rolling suitcases crammed with clothing and stuffed animals to occupy their children. They clutched cellphones showing that after months of waiting they had appointments — finally — to legally enter the United States.

The city of Tijuana approved an emergency declaration in preparation for a possible influx of migrants after Donald Trump's inauguration.

The president’s Day 1 actions included directives that fly in the face of legal limits on involving the military in domestic operations and the constitutional guarantee of birthright citizenship.

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.

Several migrants said they had recently arrived in Ciudad Juarez, Mexico after weeks of travel, only to find their CBP One appointments were cancelled.