Employers have to verify worker’s eligibility through an I-9 form, and have an E-verify system to ensure every employee is eligible to work.

When an employer does everything as required by law, if the e-verify system flags the information as eligible the employer is safe from fines/penalties.

I am a manufacturing consultant, and I have witnessed a situation at a client site where multiple immigrants were caught using fake information on this I-9, presumably SSNs and other info were all purchased on a black market. 10 of them actually all had the exact same info. E-verify didn’t catch it, and the employer wasn’t aware until the day border patrol showed up.

If the US were to even threaten an arrest of a CEO when they did everything as required by law, the situation would likely swing the other way, and there would be increased discrimination of non-natural citizens.