My referrers [1] at the Volokh Conspiracy have an interesting piece on TIA [2]:

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... The point can be reduced to a prescription: find your congressman and senators on Google; email them about this; sign up for calendaring from yahoo.com, and tell it to remind you to send more email in January (and February, and March, and…). If you're a Democrat, do it to derail the enemy. If you're a Republican, do it to save your party (Al Gore already has concluded that this is a good issue for him; he's right); if you quite understandably don't much care for either party, do it on principle.

It links to this article [3]:

He said Poindexter brought the database idea to the Pentagon and persuaded Aldridge and others to pursue it.

"John has a real passion for this project," [4] Aldridge said.

[1] volokh . blogspot . com/2002_11_03_volokh_archive.html#85652017
[2] volokh . blogspot . com/2002_11_17_volokh_archive.html#85701594
[3] foxnews . com/story/0,2933,70992,00.html
[4] indelibleinc . com/kubrick/films/strangelove