NOGALES, Ariz. —
Border security also is critical to McCain, and other Republicans, who contend that some areas along the border are far from secure.
The senators’ tour Wednesday — by both ground and air — allowed them to review manned and unmanned drones and different types of fences. They also watched as vehicles going to and from Mexico were scrutinized by border agents at the checkpoint in Nogales.
“In so many ways, whatever your views are on immigration, Arizona is ground zero,” Schumer said. “What I learned today is we have adequate manpower, but not adequate technology.”