From The Volokh Conspiracy, via Instapundit:
de Croy�s First Law of Government runs as follows: Concede no powers to your friends that you would not give to your enemies. If you are a Republican, the Law can be applied in the following form: give no powers of surveillance to the Bush administration that you would not be comfortable seeing in the hands of Hillary Clinton.
Read the whole post. It's an excellent discussion of the "Total Information Awareness" travesty that Poindexter et al are foisting off on a mostly unsuspecting public.