My apologies in advance if this is a noobish question. I've flown in and out of the US countless times, but I've never actually flown between two non-US countries with the US as an intermediary.

On Monday I'm flying DUS-ATL-BOG and wondering what the transfer experience is like in ATL for this itinerary. Do I have to do the whole collect and recheck bags, immigrate into the US, and then promptly immigrate out again? Or what?

Thanks very much for your help!