Al Guthrie in America

I thought Allan Guthrie was doing pretty well when he made it into three posts in a row on this blog, but Duane Swierczynski over at Secret Dead Blog has gone full-tilt crazy, and declared it Allan Guthrie week, since Guthrie is in the states to take part in a panel on "Tartan Noir." Ian Rankin and Denise Mina are also putting in an appearance.
What I want to know is, how did Allan Guthrie get a visa? I mean, who decided to let him into the country? If the Department of Homeland Security can't keep Scots out of the country what on Earth can they do? I mean, I've seen Trainspotting and Braveheart, so I'm an expert on Scotland, and I can tell you, I don't think it's a good idea to start letting heroin addicted broadsword enthusiasts onto our shores. We have enough native born heroin addicted broadsword enthusiasts, and they don't need the competition.