"Have you ever participated in persecutions directed by the Nazi government or Germany; or have you ever participated in genocide?"
There is also the "are you travelling to the USA to commit an act of terrorism?". As for the ESTA, I came back from Canada last year via O'Hare and had to complete, and pay for, it and I never left the airport.
I love America, have stayed with friends in various states, but going through immigration gives me the creeps every time - I was even asked once which states I was visiting. Not easy when doing a coast-to-coast road trip, we hit 14 of 'em.
because it's driven me to it as soon as out of the airport......------>