Why do you think you need a lawyer?
In general, it’s unlawful to hire, recruit, refer for a fee, or contract for services with an illegal alien. HOWEVER, it is also unlawful to discriminate against legal immigrants.
An employer should never assume an applicant is legal or illegal, especially based on certain characteristics such as place of birth, national origin, or an accent.
This area of Employment Law is difficult and tricky, so it’s best to hire an Experienced Employment Law Attorney to guide you.