>>it doesn’t take any money to kick them all off welfare and fine those who hire/employ them $100,000 per illegal...
Yep. Fine the employers and give some jail time too, and do it like they do environmental fines: each day is a different offense. So, set a fine of $10,000 per illegal per day and 30 days in jail. Suddenly that illegal nanny who has worked for you for a year is actually a 2 million dollar fine and 20 years in jail.
They will either self-deport or the revenue from the fines can pay for the enforcement of the law.