Let me put in my plug for UK Border Force. I really enjoy the show and would love to see a US version of it. What I find really funny about the show, especially the airport scenes, is that I often go through that when I come into the UK (I am a UK work permit/entry clearance holder but travel often for my job). I have Iris Scan, but its often not working and so I have to go to the immigration officers. I've yet to be searched, but I often get grilled about whether I am still in my current job (if I wasn't, my clearance would be revoked), etc. They're always friendly, but very direct and sometimes challenging (in one instance I was asked the address of my company, my telephone number, etc.). I imagine the USA is no different to foreigners and visa holders.