I really believe that it's a possibility.

Who would have thought that Obama would bring back the Espionage Act? We used to imprison people for publicly supporting Communism and/or publicly denouncing wars, and the courts upheld it. The Overton Window makes people really complacent in a pretty rapidly changing world, and the civil liberties regressions by Bush that are being institutionalized and explicitly legalized by Obama could give a future Santorum (or his ilk's) administration a bunch of scary options.

In the future, we may regret having had conversations like this on the internet or over the phone. I'm taking that risk.

edit: sentence fragment

edit - relevant: http://news.ycombinator.com/item?id=4259441