Every time I go on base or use the PX/BX in civies I have to present an ID card. Not just any ID card but a specific one. It's no big deal. When I got my drivers license, way back when, I had to have a copy of my birth cert with me. When I use a credit card in many stores I am asked for an ID so when I went to the polling place it only seemed natural that I would be asked for official ID before voting. Didn't bother me a bit.