A double anti-climb fence with a road in between aided by sensors and other technology is a force multiplier. Physical barriers work. No one is suggesting that a fence be built along the entire border. That is a phony strawman. We need to secure our border. Physical barriers are part of any such effort. We build fences around military bases, airports, nuclear plants, the WH, etc. They are meant to reduce manpower requirements.
FYI: 40% of the illegals entered the US legally and overstayed their visas. Securing the border solves only part of the problem>
The Border Wall between San Diego and Tijuana
Bingo!!!
New York City is full of illegal immigrants (chiefly from Africa and Ireland). They didn't swim there. They got a 2-week tourist visa, flew into JFK Airport, cashed in their return ticket and disappeared. If we build a fence along the Mexican border, the illegal Mexican immigrants will do the same thing. Unless we want to abolish all tourism, we are never going to stop illegal immigrants from coming in; what would work is effective sanctions on employers who hire illegals.