DHS requesting 700 additional troops, helicopters for US-Mexico border security

The Department of Homeland Security is asking the Pentagon for additional manpower and equipment to help secure the southern border, U.S. defense and Homeland Security officials tell ABC News.

The defense official said the Department of Homeland Security Wednesday will request about 700 additional National Guardsmen plus helicopters and other equipment. Defense Secretary James Mattis is expected to review the request and respond to DHS on Thursday.

The goal is to have it finalized in the coming days, according to a DHS official.

This request is for assistance with Customs and Border Protection missions, like Air and Marine units, but not directly with Border Patrol.

There are currently about 1,600 National Guardsmen serving on the U.S.-Mexico border as part of Trump's mission. About 2,000 troops have been already approved to take part in the mission. This new request would increase that figure to roughly 2,700.

Mattis has authorized up to 4,000 total troops to participate through the end of September.

As of Wednesday, there are about 750 troops on the ground assisting Border Patrol specifically - this does not include additional support troops assigned to the mission or troops currently in orientation.

The California National Guard troops in the El Centro and San Diego sectors are in orientation this week and expect to be on the ground later this week or early next week, according to a DHS official.

The current on-the-ground missions include air interdiction support, road maintenance and vegetation clearing, operational support with radio operators, fleet maintenance, intelligence analysts and surveillance support.

National Guard troops will not be carrying out law enforcement actions, according to DHS.

The assistance is designed to free-up Border Patrol agents to carry out arrests and interdictions on the border.

DHS officials said that National Guard support has led to over 1,600 apprehensions, 451 voluntary returns, and the seizure of 1,000 pounds of marijuana.

However, DHS was unable to provide a comparison to a similar time period without National Guard assistance.

Last week, chief Pentagon spokesperson Dana White confirmed that the estimated cost for 2,000 personnel and equipment already approved for the border security mission is about $182 million until the end of September. Those funds are coming from the National Guard's Operations & Maintenance budget and military personnel accounts. White said there is not a concern at this time that the money could affect readiness.

These additional troops and equipment would increase the cost estimate.
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