The moon is how far? We strung cable across how many oceans? We built cities with how many several hundred foot skyscrapers? We built how many interstates of concrete and asphalt and steel bridges border to border?
We have been over this. The last time is no different than this. America can build a double/triple wall fence border to border. Over it. Under it and with irrigation and animal access. All that stops it is willpower.
People like you, in the middle of a foreign invasion, are STILL taking excuses. Your position defaults to the Democrat position. No fence. You SAY we cannot. Do you WANT a fence. A real one? Yes or no?
Excuses? I am a member of the Texas State Militia. My bags are packed and ready to go to the border. I will put my life on the line to defend against that foreign invasion.
Yes, I believe we can build some kind of barrier. I'd prefer one with landmines, but then I am a bit extreme sometimes. It doesn't matter what I believe though. You've called me a liar and attacked my honor. So be it.
It can be done, it has been done and it is highly effective.