IAH in Houston went to kiosks ten years ago and planes would still pass out paper forms as if they were required. We would shake our heads at the firt-timers filling them out. In later years, they would acknowledge the kiosks and still offer paper forms "just in case" the kiosks weren't working, which has never happened that I know of. Well this last trip back they finally said there was no need for paper forms as everyone should just use the kiosks and... there were no kiosks. IAH has removed all the kiosks and you just proceed to the immigrations officer. And he wants no paper other than your passport. There is also no baggage screening or id check leaving customs either.