The Pentagon announced on February 3rd that approximately 3,750 additional US forces will deploy to the southwest border of the United States to provide additional support for Customs and Border Protection. The new deployment brings the total number of active-duty forces on the southern border to 4,350.
President Donald Trump confirmed that additional troops would be sent, via a tweet on January 31st. “More troops being sent to the Southern Border to stop the attempted Invasion of Illegals, through large Caravans, into our Country. We have stopped the previous Caravans, and we will stop these also,” Trump wrote, adding that a wall would make it "easier" and "less expensive" to stop the migrants.
According to a statement released by the Department of Defence on February 3rd, the troops will primarily help install a new mobile surveillance system and lay razor wire. Active-duty troops were first sent to the border in October as part of a mission that was set to end in mid-December but has since been extended twice. "That support includes a mobile surveillance capability through to the end of September 2019, as well as the emplacement of approximately 150 miles of concertina wire between ports of entry," the statement said. The new troops are expected to deploy in mid-February, a US official said.
The active-duty mission was first announced in late October. It was originally slated to only last 45 days but has been extended twice. Now both the active duty and National Guard missions are slated to continue through to September 30th. The active duty and Guard deployments budgets are already estimated to cost $682 million.