I watched that programme also. While an appropriate pinch of salt was taken through being "Tonight" it was interesting how all the individuals concerned related being shackled hand and foot and being denied food and water for extended periods. The authority's response was that "wasn't true." Yeah right.
I visited the US in 1999. I'm pretty sure I got my passport checked on exit but would be genuinely terrified to return in case some idiot has stuffed up the system and there is no record.
The behaviour of the United States in the examples given in the programme was nothing more than despicable. As the businessman said "if the officials had been wearing red arm bands with swastikas he would not have been surprised." I think that was easy going! America may be the most powerful country on earth, but in terms of human rights it is positively 4th world.