dude unless you were sharing government information over a stupid website then nothing will happen.
yes there are rules for a reason but c'mon its the government, my old company had use to internet but only selected sites so if they have the technology to do it im sure the government can,
what im getting @ is if they really really really didnt want you too they could have stopped you too.
and the chances are whateva you did if it was just general surfing of internet pages nothing will come back on you.
yes they have the ability to track exactly where you have been but they need a reason to start investigating where you have been they wont randomly check