here is a website that tells you how to acquire the unclassified portion of your travel dossier, as kept by the Department of Homeland Security. If you try it let me know whether you get your file (or a knock in the middle of the night asking why you want to know...not that would happen, right?).
Thanks to Barrett at Free Government Information for pointing it out. And thanks to f mandarino for the very cool photo. He's got a bunch of them at Flickr.