Being a U.S. Citizen noncombatant detained without charge? That's a big line to cross, legally. I'm fairly confident it hasn't been.
A very quick Google search found me José Padilla. According to Wikipedia, during several years of his detainment there were no charges against him. He was designated as an enemy combatant at the time, but this seems arbitrary, since he was arrested in an airport, not captured on the field of battle.
Ohkay... on the other hand, this guy had gone to a terrorist training camp. Classifying him as a terrorist may have been inaccurate, but it wasn't crazy - the circumstantial evidence was a lot stronger than 'uses anonymizing software'.
(btw, upvoted for correcting me)
Referring, of course, to the proposed U.S. legislation which could cause severe damage to the Internet—at least, that's what a lot of people are saying. See, e.g., this Open Letter From Internet Engineers to the U.S. Congress (the first signatory listed is Vint Cerf). On Wikipedia, people including Jimbo Wales are discussing strategies as extreme as blanking the entire site (except for an explanatory message) to get people's attention, and thereby perhaps incite them to action, such as calling their Congressional representative.
I just happened to find out about all this a few hours ago, being someone who tries to avoid distractions like most kinds of news, so possibly others here with similar habits will appreciate having it called to ther attention. Or possibly they won't. But to those of you who possess relevant kinds of expertise:
(I think this subject can be discussed without political advocacy, in which I am mostly not at all interested anyway. It just looks like a practical problem to me.)
Edited to Add: I forgot to include a fourth bullet point:
It seems to have been assumed by many commenters, nevertheless.