[Arct1k]

I have a green card and certainly do not carry it at all times and wouldnt want to - I've been stopped by the police in teh past and produced US driving licence and its never been an issue.

I see no reason to carry a card at all times - I do think it is reasonable to present proof of residency if you are expecting any service from the US gov or commit a crime. This would trap almost all.

Couple of other thoughts - I was here on and I94 work visa which is just a stamp in my passport. Would that mean I should carry my passport at all times.

Surely this would mean legal US citizens also have to carry id otherwise you are an illegal? Whats the % of americans with a PP or a driving licence?

Does that mean every American will carry their birth certificate?

PS My driving licence in NJ at least is only ever validated for as long as my work visa allowed. Hence if I had a driving licence there was a pretty good chance I was legit. However in either of my tickets or pleas at court this was never asked about