An imposing physical barrier is needed to discourage Mexican Nationals from invading our country illegally. Hadrian's wall, the Korean DMZ, and the Israeli security fence all have worked to minimize crossings. If there want to come, come legally.
The border fence in San Diego has forced them east towards Arizona.
Of course a wall would work. So would land mines. So would aerial surveillance, with orders to shoot to kill. The government knows how to seal the border, it just doesn't want to.
Since moving here to an Arizona border town, I've learned a lot. My first lesson was that US Border Patrol (as a federal agency) isn't serious about capturing illegals, they're just putting on a show to make us think that they are. (Sure, they have token arrests and have hired more agents, but it's still not a serious effort.) In fact, Gilchrist has been on local radio several times, explaining that the entire reason for this Minute Man Project during April is to *monitor Border Patrol response times.* Initially USBP was supporting them, but when they learned the above they did a 180 and have held press conferences blasting them, describing them as a "trigger-happy vigilante group," which of course was reported by MSM.
Ask any Arizona rancher living near the border, and you will get the same response: BP is a joke, and they aren't really that interested in or serious about doing their assigned "task."
Folks, the BP is just putting on a show, and the MM are trying to expose it for what it is. That's why the BP is pizzed -- can you say "politics?"
So I have to agree with the other poster: our government will not back the MM. USBP is against them.