I wouldn't be surprised if there is a system and your name popped. Years ago, going through US customs wasn't a big deal for me. Now, I've got loads more stamps and visas in the passport I get questioned more, every time. They'll ask about countries I've been in 20-25 flights ago. I give them the "fuck if I know" face.

Legally, they can't prevent me from entering the US, but they sure love to slow me down.