Hours after Trump’s inauguration, his administration canceled appointments allowing migrants to enter the U.S. to request asylum, leaving many of them stranded on the U.S.-Mexico border.

Immigration officials are already taking action along the Texas-Mexico border. The American Civil Liberties Union has already filed at least one lawsuit.

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.

The Pentagon will begin deploying as many as 1,500 active duty troops to help secure the southern border in the coming days, the White House confirmed on Wednesday, putting in motion plans President Donald Trump laid out in executive orders shortly after he took office to crack down on immigration.

Troops have assisted at the border before and will be limited to support roles unless the administration invokes the Insurrection Act.

The Pentagon will deploy up to 1,500 active-duty troops to the U.S. border with Mexico, following executive orders from President Donald Trump to use the military to seal the border.