you go in with your birth certificate, social security card, passport, utility bill, and irish driving licence and apply for one. you dont need to take lessons as required in some countries. if you cant get it in colorado then go to another state and get one.
fromnaija is mistaken. there is such a thing as temporary ssn's and i forget which, but they all begin with a certain number, so if you see a ssn begining with a certain prefix then you know its temporary. when you get married just tell them you had a temporary ssn that is expired.