When I was growing up in the 50's and 60's, we were told how terrible it was in the Soviet Union, with all the limits on movement, the spying amongst citizens, the need for "papers" everywhere you went.
Apparently is was out of envy. Because we're doing it here now.
Some time in the future the world will be celebrating the tearing down of the fence between the US and Mexico the same way they celebrated to tearing down of the Berlin Wall. And some day a group of passengers will walk down the corridor and get on a plane without having to be denuded or rectally probed or without being brain scanned for seditious thoughts and the world will celebrate that too. It'll feel like 1970 all over again. And again the world will celebrate.
In the meantime, we're not allowed to.