The rules in the US seem to have changed this summer to require ID in almost every case. See Flyertalk's security forum here: http://www.flyertalk.com/forum/t

The rules in the US seem to have changed this summer to require ID in almost every case. See Flyertalk's security forum here: http://www.flyertalk.com/forum/travel-safety-security/984568-oh-oh-rules-seem-have-changed-pv.html http://www.flyertalk.com/forum/travel-safety-security/984568... Very disappointing and arguably unconstitutional.