Join Date: Aug 2006
Location: DCA / WAS
Programs: DL 2+ million/PM, YX, Marriott Plt, *wood gold, HHonors, CO Plt, UA, AA EXP, WN, AGR
Posts: 9,386
It's not unusual - coming through DFW this week Customs was checking all passports in the Global Entry & Crew line, and it appears they were doing so in the regular lines, too. Same with Miami - just a quick glance. When I came through JFK in October, there was no passport check.
They do have the right to do the check, and generally it's not a big deal.