The general trend in the US is toward having the security apparatus hoover up more and more information, and keep it for longer periods of time. Of this I am fairly confident.
I also expect that at some point involvement with Bitcoin in any way could well be considered 'fraudulent activity' for the purposes of obtaining data acquisition authorizations.
If Bitcoin involvement is ever considered "fraudulent activity", it'd mean we have failed (not only MtGox, but Bitcoin as a whole).
I have faith in Bitcoin (and our legal advisers do too) and that's why I'm still here pushing for things to move in the right direction. If you believe you are doing something wrong just by the fact of using Bitcoin then let me know.