No no - I am not in the US. It's not that they aren't letting me in or out. I could get in with the official doctor's note, but I'm not heading down there (unless there was a sudden hubski meetup in Michigan), so I said no to the note. The US - Canada border has all kinds of radiation detectors that can detect me coming before I get up to the window (driving, that is, not flying).
And yes, it is miniscule. They saaaayyyyy.