[tallanvor]

No, why would it? When I take the bus, subway, or train, nobody is checking IDs - at most they check if I have a valid ticket, which can be bought with cash.

I've flown many times within the EU/EEA without showing an ID, so I fail to see why traveling within the US should be any different. I've spent most of my life in the US, but the only times I've been in close proximity of terrorist events have been in Norway (Breivik's bomb went off two blocks away from where I worked at the time, and more recently the shooting outside London Pub that killed two and injured multiple others).

I wish I understood why the US feels the need to overreact to everything.