How is a birth certificate not an ID? ID is not something you are required to keep or maintain. For employment here for every single person I employ I am required to take forms of ID - standard for British citizens being either a passport or a birth certificate AND paperwork showing an NI number (out SSN equivalent). Without either a passport or birth certificate [or equivalent] it isn't possible to legally get a job in this country.
As for it being federal that doesn't address what I said. I said "the state" as in the government/nation state not as in one of the 50 states. I don't see why it matters if it is federal or state. Confusion for the fact that state has two separate definitions here.