"It's of little use under TSA rules anyway, because it lacks your birthdate, gender, picture, or an expiration date (all of which are "required" for usable ID). SS cards are also so easy to forge that older ones said "Not to be Used for Identification" right on the card!"

I have an ID from the NIH that I use to fly with. I NEVER show my DL (except at the airline counter where it makes sense). It has my name and an expiration date (August 2009; not even a specific day). I don't take it out of the plastic sleeve either. They look at it, use the loupe and light and then I'm cleared to go. So the "rules" have a bit of stretch. I hate showing ID, but this is pared down to the bones and doesn't give any info I don't mind them knowing...well i mind, but i hate DY...T...which i got last week because i didn't want to take my watch off.

Anyway, OP, you'll be ok. have a good trip.