A side question on AP...
Anyone who's re-entered the US using AP please post your experience regarding check-in counter experiences in place of origin and transit.
I know that in India you should show valid visa to gain access past customs clearance and into the airplane. Simiarly, in Europe, they check your visa before you board the flight. Do these people know that AP is a perfectly valid travel document in lieu of an actual visa? Your feedback will be appreciated.