Double fencing isn't the answer if it can move via plants and other animals. Maybe some deer are just predisposed to it, like people with cancer. Cancer isn't contagious so why do some people get it??? Yes, the whole argument about closing borders to keep out CWD was bogus from the beginning and everyone knew it. In Texas they can release deer into the wild, so if this farm did that trace backs will be impossible. The same for any farm that bought deer from them if they have turned them out.
Wisconsin dealt with this 13 years ago, so Texas is just catching up to us now.