Based on all the good advice offered here, I urged Husband to try jumping the customs line with his GE print-out when he came back through MIA yesterday. He wimped out and didn't try it. His excuse was that the line was very short. He's platinum/permanent gold, so his luggage is priority and he never has to wait for it. Which means that he generally gets to Customs fast.

Plus he had two hours to make his connection, so no reason to rush.

Though of course he's claiming that he suddenly developed patience...

We will be coming back from Africa via ORD in a few weeks. Wait until he has to wait with me for my luggage and then the line is long...then we'll see just how much patience he has developed.