Originally Posted by
CoachBoy
As a US passport holder, waiting 2 mins in the IRIS machine is much better than standing in line for 45mins if my flight lands at the same time as others coming from asia and africa. Also I'm in an out of the UK fairly regularly (5-6 times a year) due to family, and having to explain the situation to an immigration agent every time gets tiresome.

Just think yourself lucky then that you never have to visit the US as a non US passport holder. Where I would consider clearing immigration in under 45 minutes as something of a result. Also does the US offer anything like IRIS to its frequent visitors? No I thought not.