As much as I wish this was an option, there is a very large rift between the US citizens and the US government. It has been separating for years now, and it would take a critical mass of citizens in agreement about something to enact any change.

Unfortunately people are too distracted working or playing farmville to care about what's happening in our country. What's more is our media completely distracts us with things like abortion and gay rights (they are important, mind you, but not as important as constitutional issues that affect basic rights IMO) so that there's no chance of standing next to someone from the other political party. As the citizens become more divided, the government grows stronger. We've seen what it does with this power.