The Patriot Act was reauthorized in 2009 without a single modification, despite there being a bi-partizan bill on the floor of congress that looked to implement many more checks and balances, as Obama wanted.
Here is what candidate Obama said in opposition to the FISA extension bill in 2008:
> "I am proud to stand with Senator Dodd, Senator Feingold and a grassroots movement of Americans who are refusing to let President Bush put protections for special interests ahead of our security and our liberty."
Guess what he did when he became President ..
He also said he would kill warrantless surveillance, but by extending the FISA Act. they changed the warrantless period from 48 hours to a week, at the same time banning states from requesting information and plugging a lot of other loopholes that legal challenges to FISA and warrantless wiretaps could have used in courts.
Obama did a complete 180 on civil liberties (there were other issues as well - Gitmo, habeas corpus for enemy combatants, the coke/crack sentencing disparity, assassinating US citizens with drones etc.) and for some reason seems to enjoy the tough on crime/tough on terrorism stance.