Yep, it sure has. Disney milks it for money in other countries, but they won't sell it in the U.S. Check out Bannedfilms.com, notice the little something extra you get when you buy that poster? Act casual, say nothing! ;-)
Also, there are some of the banned Warner Bros. cartoons at THIS WEBSITE, though none of Speedy Gonzales. Might want to have a look while they're still available.