The head of the U.S. Customs and Border Protection is being criticized for not following hiring law.
Bersin has employed 10 household employees since 1993 and failed to complete I-9 forms for all of them.
He says he checked Social Security Cards and driver licenses but didn't complete the form saying that he did so.
Members of the Senate Finance Committee were surprised by that, given Bersin was a U.S. attorney and that Bersin's wife is a Superior Court Judge.
The I-9 form is issued by U.S. Citizenship and Immigration Services, which shares immigration enforcement responsibilities with CBP and Immigration and Customs Enforcement.
Bersin was formerly the superintendent of San Diego City Schools. President Barack Obama named Bersin commissioner through 2011 during a congressional recess. He must be confirmed by the Senate to serve longer.