I've had it up ' to here' with US immigration. Each time I go (6-7 times last year) they interrogate me. They ask me questions then interupt me before I can reply. Last time I was asked how I could possibly spend so long in the US and still run a busineess in the UK. Well, I can, it might not fit in your box, but get over it). They asked whether I was going to propose to my girlfriend on this last trip, how long had I known her, ... why not... (these extrememly personal questions after a 15 hour day in a room in front of other people). The guy said "Tell me something I don't already know" (what ever that means). Twice he told me to 'Get out of here, I've had enough of you'. That was after suggesting I in fact work illegaly in the US, I 'must spend more time in the UK', and he'd 'mark my record, so everyone can see you need to get a visa'.
I've aways been very fond of America and it's ideals, and have lovely friends there. But despite the posters every meter or so in the airports re: immigration staff 'We are the Face of America'... I'd really think twice about going back if it were not for family reasons.
American beaurocrates really are A-holes.