Mexico

The costs of maintaining active-duty and National Guard troops on the border have risen to at least $235 million.

Trump said he was prepared to back a 3-year extension of protection for 700,000 immigrants who came to the U.S. illegally.

While the troops are staying on, the mission is changing.

Shanahan said the border troops are conducting daily operational training and focusing on the "restoration of fences."

The border mission with no name will continue past Christmas and through the end of January, the DoD announced on Tuesday.

The Pentagon is likely to extend the deployment of border troops to Jan. 31.

Defense Secretary Jim Mattis weighed in on a late-night memo from White House Chief of Staff John Kelly.

Some of the thousands of active-duty troops deployed to the border in Texas and Arizona are likely to shift to California.

The number of troops currently at the border to support the DHS is likely the highest it will get.

Defense Secretary Jim Mattis plans to visit U.S. troops stationed on the southwest border on Wednesday.