Well, it's no news to me. They've been testing for this type of thing before you get married, so it was bound to get into computers at one point.

I'm from Canada, but got married in Puerto Rico. One of the prerequists for getting a marriage license was a test that would look for gonorrhea, syphilis, familial relatives, and, wait for it...idiocy.

How, exactly, did they test for that in the blood is anybody's guess, and the nurse who took our blood was a little surprised at the paperwork we'd gotten from the government, but imagine our relief when we got our permits and, as such, confirmation that we were, indeed, not idiots.