When I came back from Central America (Panama), I thought I was coming back to a free country.
No more checkpoints, to be approached with fear and trepidation.
Once I got to Yuma, I immediately noticed the checkpoints.
This, I thought, in America?
And I bet that few if any here know, that in the late teens /early '20s of the 20th century, you needed a PASSPORT to get into and out of Canada; but Americans did!
No checkpoints = no control....at least on or near borders...
and other know high traffic area....I remember a joke in the 70s: What’s a Texan? A Mexican on his way to Oklahoma....