With 15% of citizens out of work, the answer is, foreign worker registration...No. Path to citizenship...NO!!!
It also gives us data on where they are and what they are up to. NO JOBBIE, NO STAYEE.
Besides, there is likely around 18 to 20 million...that's million illegals in this country. Without mandatory registration, you have no hope to track them. Personally, I wish they'd all just evaporate, but I've gotta be realistic.