There is some stuff primarily out of the United States. Since they're our closest partner, I would recommend seriously looking at the Access Board and at setting up an independent agency such as the United States Access Board.
There are also those two statutes that I mentioned, section 225 of the Communications Act of 1934, and section 508 of the Rehabilitation Act of 1973. The American government won't purchase any technology unless it's of high security and isn't accessible. They actually have a procurement policy that has had an enormous influence in the States.