Is CBP's International-to-International (ITI) program available?
I stumbled onto a CBP report (now a year old) where they listed the automation capabilities of the 17 largest airport point of entries in the USA. I know this question comes up periodically so I looked to see which of the airports support ITI baggage transfer which allows passengers making an international to international connection in the USA to have their checked luggage automatically transfered to their connecting flight, bypassing the collection and recheck process (but not immigration). Here's the year-old list:
Atlanta
Dallas
Detroit
Houston
Miami
Washington -- Dulles
Maybe this will be of some use to someone.