There’s the rub, Norm.
The reason “enforcement” isn’t a sine qua non here (’without which, nothing else’) has become apparent.
They don’t have any intentions of securing our southwestern border.
Period.
And the truth of that is when you notice not one GOP toadie has brought up the shell game they ran on Reagan in the 80s.
They are running it again. Almost verbatim. And we hear silence.