Due to the ongoing concerns with KHV, members of the All Japan Nishikigoi Shinkokai have been asked by the association to refrain from importing koi to Japan. This request is referred to a a "self imposed restriction", a common practice in Japanese industry.
This restriction also prevents Shinkokai members from reimporting Japanese koi that have been previously exported.
These restrictions could conceivably come under attack now that the All Japan Show has adopted the biosecure "My Pool" (similar to English) style of showing koi, but for the moment, there does not seem to be any realistic reason to mount a serious challenge.
Anyone attempting to carp or koi to Japan today faces not only serious restrictions, but the wrath of the entire koi industry.....Guess it would have to be a real special koi.