I linked to Jim Thatcher's post Accessibility of the White House Web Site, so I thought it only fair to link to his update as well.

I have updated the report on the Accessibility of Whitehouse.gov because there have been significant improvements there. It is gratifying and encouraging. Specifically, I think it is fair to say that the major issues reported in that news item have been fixed. Furthermore, in the arena of machine detectable errors detected in a depth one scan, the White House site has gone from an average of three errors per page to an average on one per page in less than two months. Congratulations! - Web Accessibility News