Apply for one.
No...you never could why would you ask?!?!?!??
Yes. You are required to have it on you whnever you drive and show it upon request of law enofrcement.
I do not have one
You need a few things. Birth certificate, or passport. Usually it is 2 forms of Id. One can be your birth cert, and the other your passport. Social security number is required for locals. Foreigners...