http://www.highstakesnews.com/2010/02/23/full-tilt-poker-under-the-investigation
-of-fbi/ Here's what I found on it. Seems pretty much like FT might block players in Washington state to avoid this issue. They did this in my state for a while by blocking based on IP location. I was IRATE, but now they allow it again, so I'm okay.
I don't think this is really a concern, although I did see in a blog somewhere that there might be an online gambling ban imposed in the US in June. I don't really believe that would ever happen, but if that were the case, I might have to move to Canada LOL