DFW has a separate Customs line for Global Entry / diplomats / crew / wheelchairs. The officer quickly glanced at my GE receipt, compared the check digit to his list, and let me proceed. Excellent service! I cannot tell you how many times my GE membership has paid for itself in letting me make my connections, when there have been huge lines at passport control.
JFK T8 does not yet have a dedicated exit for GE, but I suspect it is in the works.
Does anybody know about ORD? I haven't come in through there in a while but will be doing so in a couple of weeks. It would be great if they had a dedicated line there.