Forget employer sanctions. Build a barrier. It is simply ridiculous to say it cannot be done. If one fence won’t do it, then build a second 100 yards behind it. And then build a road for patrols in between. Put in cameras. Put in sensors. Put out lots of patrols.
Can’t be done? Israel’s border fence has been extraordinarily successful in keeping out potential infiltrators who are far more determined than mere immigrants. Nor have very many North Koreans crossed into South Korea in the past 50 years.
Generations of American politicians, for whatever reason, saw it in their interest to defend the integrity of the US's borders.
They no longer do, obviously.
I'd like to know why.