Shanahan wrote to Department of Homeland Security Kirstjen Nielsen that military funding would be provided for construction along the border to combat drug smuggling. DHS had requested military funding last month to construct roads, lighting, and fencing at 11 project sites along the border.

Shanahan agreed to provide funds up to $1 billion for three of the projects suggested by DHS, which he described as constructing 57 miles of 18-foot-high pedestrian fencing, roads, and lighting in the El Paso, Texas, and Yuma, Arizona, sections of the border.