U.S. officials say active duty military troops are arriving in El Paso, Texas, and in San Diego on Thursday evening.

It's the first batch of troops deployed to the border following President Trump’s executive order demanding an immediate crackdown on immigration.

The move enacts President Trump's executive orders issued shortly after he took office to intensify immigration enforcement.

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.

U.S. border agents have been instructed to summarily deport migrants crossing into the country illegally without allowing them to request legal protection.

The Trump administration has essentially eliminated the ability to pursue asylum at the border, attempting to erase by executive order a right established in U.S. and international law. The restrictions leave migrants who claim they fear for their lives almost no path toward safety in the United States.