Lots of talk lately about regulating immigration and employment being solely a federal issue.

Sometimes, people should actually read the law before they write. Below is from that pesky existing federal law. The entire section can be read here.

TITLE 8 – ALIENS AND NATIONALITY
CHAPTER 12 – IMMIGRATION AND NATIONALITY
SUBCHAPTER II – IMMIGRATION
PART VIII – GENERAL PENALTY PROVISIONS

Section 1324a. Unlawful employment of aliens

(h) Miscellaneous provisions

(2) Preemption

The provisions of this section preempt any State or local law
imposing civil or criminal sanctions (other than through
licensing and similar laws) upon those who employ, or recruit or
refer for a fee for employment, unauthorized aliens.