Do you know all the things you need a birth certificate for? To get a driver's license, they want to be sure you're who you say you are, so they want a birth certificate. They like them for college applications too, and when you get a passport, they want a birth certificate.
I don't know from personal experience, but I'd bet they want one for the bar exam, and for when someone decides to run for public office.

I heard Taiz speak on some talk show. She seemed to think once she got Obama out of the White House, there would be another election and Hilary Clinton would be president. Which means she doesn't know how the government works, and she is a world class dumb bunny.