I see. And what would work as a proof of identity?
For example a U.S. driver's license or a state-issued, non-driver identification card.
Actually, a friend of mine lost their Social Security card. If that happens to me, can I get it replaced somehow?
You can replace your child 's Social Security card for free if it is lost or stolen. However you may not need to get a replacement card, knowing your child's Social Security number is what's important.