Here is a good run down on how we got to where we are WRT CIA/FBI/NSA spying on American citizens in the name of the "War on Terror".
The Bush Family Coup
Son revisits the sins of the father on America
by James Ridgeway:
"Given all that’s happened, the only explanation for the Bush domestic spying is that it’s political. There are no crimes involved here. But there is an overweaning desire by this so-called conservative government to establish and institutionalize a Big Brother regime that tolerates no dissent and wrecks constitutional government."