E-verify will get rid of millions of pests and will short circuit their ID theft rackets. Other measures also needed such as the ejection of visa overstayers. I would almost say that anyone who wants a visa to visit here must get chipped. That the chip must get scanned every other month so we know your whereabouts. Put them through the Big Brother wringer instead of us
With the chip removed when they depart.
We don't even need to go that far. When I was young I remember there used to be a government TV ad that ran starting every Christmas season to remind non-citizens that they have to re-register at the Post Office by January 31st every year. Documentation is the key to control and we no longer have any control at all over foreigners after they get past the border.
Never EVER let government get its foot in the door with something like “chipping” people.
If you need a simple lesson with regards to that sort of fiasco just look to the beginning of mandatory seat belt laws and the pious promises of “but you’ll never be able to be pulled over for just that” when it was being sold...