Joe Biden stated the following in a speech given ONE day before 9/11:
Before 9/11, the Bush administrations national security focus was on missile defense, not terrorism. In fact, on 9/11, then-National Security Adviser Condoleezza Rice was set to deliver a speech that focused largely on missile defense. Writing at the Huffington Post, Joe Cirincione president of the Ploughshares Fund recalls this quote from Sen. Joseph Biden (D-DE) on Sept. 10, 2001, warning against the Bush administrations approach:
We will have diverted all that money to address the least likely threat while the real threats come into this country in the hold of a ship, or the belly of a plane, or are smuggled into a city in the middle of the night in a vial in a backpack.
Cirincione writes, If George Bush had listened to Joe Biden instead of Donald Rumsfeld, the history of the past seven years would have been very different. We might have prevented 9/11.
http://defendingthetruth.com/warfare/40254-joe-biden-predicted-9-11-one-day-before-happened.html
There was a video on KOS back in 2008, but that video is gone. It was a speech to the national press club.
http://www.dailykos.com/story/2008/09/18/602930/-Biden-sorta-predicted-9-11-on-9-10-video