I'm very suspicious, too.
All that info flowing from medical records offices across computer, phone and fax lines, all caught up in the huge governmental datasweep....
How much effort would it take to "ding" every citizen who'd been screened as possibly being depressed? How many people take an antidpressant? Would they be classed as mentally unstable, and thus not able to own a gun?
Bad, bad precedent.
(I agree with Plane! I think an angel just got his wings...:-)