LHR has got to have the worst passport control for US-bound flights. I'm not talking about immigration (just like in the US, there's no immigration in exit in the UK), but those E-SEC (or ICTS) people who check and scan your passport and your status in the US before you even proceed to the check-in counter.
Last time I flew out of Heathrow the guy had a hard time recognizing the I-751 extension letter, but after 5 minutes he finally let me through (plus, my wife was with me).
Now, this guy scanned my passport, scanned my 10-yr green card and when everything was looking good, he noticed the many middle-eastern stamps in my passport, plus an indonesian visa, malaysian stamps and a couple of russian visas. He freaked out, literally. He disappeared with my passport for 20 minutes, came back, asked me several questions on what countries I visited, asked a couple of other colleagues. He finally let me through. I asked what the problem was and he said that they always do that with all non-US and non-UK passports. I asked him what the difference is between a UK passport and an Italian passport for the purpose of traveling to the US, especially when I have a valid green card. He couldn't answer, but it was clear that the middle eastern stamps threw him off.
The funny thing is that the guy was clearly a Pakistani....
Last time I flew out of Heathrow the guy had a hard time recognizing the I-751 extension letter, but after 5 minutes he finally let me through (plus, my wife was with me).
Now, this guy scanned my passport, scanned my 10-yr green card and when everything was looking good, he noticed the many middle-eastern stamps in my passport, plus an indonesian visa, malaysian stamps and a couple of russian visas. He freaked out, literally. He disappeared with my passport for 20 minutes, came back, asked me several questions on what countries I visited, asked a couple of other colleagues. He finally let me through. I asked what the problem was and he said that they always do that with all non-US and non-UK passports. I asked him what the difference is between a UK passport and an Italian passport for the purpose of traveling to the US, especially when I have a valid green card. He couldn't answer, but it was clear that the middle eastern stamps threw him off.
The funny thing is that the guy was clearly a Pakistani....