Secretary of Defense Jim Mattis is due to visit the U.S. southern border Wednesday, where thousands of American troops have been deployed to support border patrol agents.
Speaking to reporters Tuesday at the Pentagon, Mattis said there has been “no change” to the U.S. military mission “at this time.”
SEE ALSO: Pentagon Chief to Visit US Southern Border Wednesday"We’re doing the obstacle emplacement, we do have helicopters down there,” he said. “We will have to see what the future holds, but right now that is the only mission I have.”
President Donald Trump called for increased border security to prevent a caravan of asylum-seeking migrants from Central America from entering the United States, declaring on several occasions its approach constituted a "national emergency."
More than 5,600 active duty troops and another 2,100 National Guard troops have moved into the U.S.-Mexico border area due to requests for help from the Department of Homeland Security.
SEE ALSO: Migrant Caravan Continues Trek Toward US Border Despite Trump's Suspension of Asylum RightsA U.S. defense official told VOA Mattis will visit McAllen, Texas, where about 1,000 U.S. troops are deployed.
The U.S. troops assigned to help with border security are legally prohibited from engaging in domestic law enforcement, such as arresting migrants crossing the border.
Mattis’s border visit comes as sources say Trump is considering the removal of Department of Homeland Security Secretary Kirstjen Nielsen.
Nielsen was selected as secretary of Homeland Security after John Kelly left the post to become Trump's chief of staff.