> When you see fraud, report it. https://www.uscis.gov/report-fraud/uscis-tip-form

And tell your manager explicitly and put it on the record that you reported it. Get fired in retaliation? Lawyer up.

> Your Information (Optional)

> You do not have to tell us your name or provide contact information. However, if we need additional information and have no way to contact you, it may limit our ability to review your tip and take further action.