Nonsense. That's like saying that the only way police can be expected to tell the difference between law-abiding citizens and crooks is for the former to carry an official I Am Not A Crook card (with an engraved holographic seal depicting Richard Nixon, perhaps).
The fact of the matter is simply enforcing the law against the employers who are knowingly violating it or who willfully look the other way would suffice to dry up demand for illegal alien labor to the point where the vast majority of them would go home.
this step must be taken - evevn if only for the present
If you really believe that the government can be trusted to roll back such a power grab once the "temporary crisis" has passed, I suggest that you will your body to the Smithsonian Institution for display as a unique specimen.
"Nonsense. That's like saying that the only way police can be expected to tell the difference between law-abiding citizens and crooks is for the former to carry an official I Am Not A Crook card (with an engraved holographic seal depicting Richard Nixon, perhaps)."
If you can tell me how an employer can be expected to distinguish between an American citizen with a foreign accent and poor command of English, and some illegal alien who has perfect command of English and dresses and acts like an American, I'll agree with you.