Not that it would matter, as you have to go through INS to go to Customs anyway, at least at LAX, JFK, PHL, and PHX, the places I have gone through In a message dated 9/7/2004 4:21:31 AM Central Daylight Time, adaltun@xxxxxxxxxx writes: When Aeroflot operated Moscow-US via Shannon, they were not allowed use the US INS pre-clearance facility at Shannon but had to go through the full procedures on arrival in the US. Canadian pre-clearance includes customs and INS. Dublin and Shannon are INS only.