As the Internet has grown (into multiple internets according to a recent presidential malaprop) the White House has always had a site. Not surprisingly this is a site paid for by the citizens of the country. There are collections of information on the site. One of those documents includes this March 2002 press release in which President George W. Bush says about Osama Bin Laden, "I don't know where he is.  I  --  I'll repeat what I said.  I truly am not that concerned about him."

One might be tempted to look this up after the recent debate where the same President lied to the people once again and said that he'd never said such a thing. The problem is you would have a tough time finding it if you went to look at the March 2002 press releases. Here are three images from February, March and April 2002's Press Release pages on the website.

So it all boils down to a government official trying to change the story on what they did in the past.