About how long does it take to go thru Customs and immigration at IAH. Does IAH have Global Entry? Thanks

Varies widely based on time of day, how many other flights arrive around the same time. Have had to wait anywhere from just a few minutes to almost an hour in immigration. Yes, there are GE kiosks, and since having that option wait time has been minimal. Once through can take a bit if you must wait for checked bags, but given the time it takes to walk from arrival gate to immigration the additional wait is usually not more than maybe 10 minutes.

I have been thru IAH a couple of times in the last few months. Very fast using GE. Traveled with a friend without GE and she exited just a few minutes behind me as they have GE type kiosks for clearing immigration.

Thanks! Sounds like we'll be ok.