We had the rudest man ever last year, he was unbelievable! Basically he called over anyone who was a US citizen from a long queue of airline passengers. He paid no attention to the fact that about 10 passengers were all called through, by him, and we were still patiently watching them all pass us by. Once there was no-one (American) left to call I very calmly walked over to ask if he would allow us to present our documents next. He barked at me like I was a dog!! My dc is autistic and she was panic stricken by his disgusting behaviour. I explained to him that there was no need to be rude and that I had only made a simple enquiry. Big mistake!! Major rudeness from him, it was as though he was desperate to find something, anything to pull us up on. Thankfully there was nothing but, at the end of the process, he simply threw back our documents and said nothing. That was my DCs first experience of the U.S and it was both terrifying and appalling. There is no reason whatsoever for such behaviour.