The U.S. military will order more than a thousand additional active duty troops to assist with U.S. Customs and Border

The Pentagon said Wednesday it has begun deploying 1,500 active duty troops to help secure the southern border, putting in motion plans President Donald Trump laid out in executive orders shortly after he took office to crack down on immigration.

The U.S. military will send 1,500 additional active-duty troops to the border with Mexico, the White House said on Wednesday, just two days after President Donald Trump signed an executive order on immigration.

A U.S. Border Patrol agent killed during a traffic stop near the Canadian border worked security duty at the Pentagon during the time of the Sept. 11 attacks.

David Maland, 44, was a military veteran who worked security duty at the Pentagon during the Sept. 11 attacks, his family said.