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.

By Laura Gottesdiener and Lizbeth Diaz CIUDAD JUAREZ, Mexico (Reuters) - 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.

"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.

Mexico erected sprawling tents on the United States border as it braced for the effects of Donald Trump’s mass deportation drive. In an empty lot in Ciudad Juarez, which neighbours Texas, cranes lifted metal frames for tent shelters.

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.

The US-Mexico border is effectively closed off to migrants seeking asylum in the United States within hours of President Donald Trump taking office, an extraordinary departure from previous protocols that has left many concerned migrants in limbo.

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, 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.

As many as 10,000 troops could eventually be stationed at the U.S.-Mexico border as part of Donald Trump ’s sweeping campaign to carry out mass deportations and declare a national emergency at the international boundary line.

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.

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