On his show today, Rush said his staff traced the comment back to an entry made 8 years ago on Wikipedia that is/was labeled “under dispute” or “unconfirmed” or something like that. I don’t use Wiki so I’ve never read the entry.
Wiki works out alright if you are looking for some information that the left can’t twist to its favor.
Wikipedia is crawling with leftists who seem to have nothing else to do except scrub out anything remotely conservative. You'd think they would use some of their Copious Free Time™ to clean this thing out too, but in their world, anything bad about a conservative is automatically true. No source needed.