I am sorry this is happening to you and I had similar situation happening to me (it is especially frustrating when you are coming from a 14 hour flight and still have to get home). A few times they were asking some questions, but most of the time they just let me go. What one officer told me is that this is a mark that you will never be able to remove until you become a citizen, otherwise you should just plan on a longer connection time.
But keep us updated in case your situation changes, I'd be more than glad to know that someone succeeded.
Sandr123 got a reaction from Chewbacca in Problems when entering the US with GC