1. I don't see why there is not a master database that police could check with their patrol car computers like employers are supposed to do before hiring anyone.
2. I would prefer a graduated penalty, i.e. $1,000. per illegal employee the first time --- $5,000. per illegal employee the second time --- 30 days jail per illegal employee the third time ---- Get caught again and its 1 year in jail and you're never allowed to own a business or have employees again.
3. Sounds good as is.