Here's what this article has said

"The license looks no different from other California driver’s licenses but features two notable exceptions: The front includes the phrase “FEDERAL LIMITS APPLY,” and the back states: “This card is not acceptable for official federal purposes. This license is issued only as a license to drive a motor vehicle. It does not establish eligibility for employment, voter registration, or public benefits.”

Read more here: http://www.fresnobee.com/2014/11/07/...#storylink=cpy