The Great Wall of China took well over 300 years and 500,000 men to build. The United States is not quite 240 years old itself.
Israel’s separation barrier is approximately 400 miles long, which is one-third the length of the Texas border and one-fourth the length of the U.S. border. The terrain in Israel does not include 1200 miles of water. The barrier is primarily intended to prevent terrorist attacks. The Arabs are not digging sophisticated tunnels under the barrier complete with electricity and rails to transport drugs and illegal immigrants.
Different purposes. Different terrain. Different resources. Different time periods.
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?