Pre-9/11 warrantless wiretapping (thanks to George Washington for collecting these links):
http://blog.wired.com/27bstroke6/2007/10/nsa-asked-for-p.html
http://www.bloomberg.com/apps/news?pid=20601087&sid=abIV0cO64zJE
http://rawstory.com/news/2007/ATT_engineer_says_Bush_Administration_sought_1216.html

http://www.google.com/hostednews/ap/article/ALeqM5i4sj03-Gb3HZUn9lqMmn4QKH30mwD96KADA00
Court rejects Obama bid to stop wiretapping suit
By DEVLIN BARRETT – 20 hours ago

WASHINGTON (AP) — The Obama administration has lost its argument that a potential threat to national security should stop a lawsuit challenging the government's warrantless wiretapping program.

A federal appeals court in San Francisco on Friday rejected the Justice Department's request for an emergency stay in a case involving a defunct Islamic charity.

Yet government lawyers signaled they would continue fighting to keep the information secret, setting up a new showdown between the courts and the White House over national security.