It´s hard to believe that someone with a sound mind would purposely breed N/H or H/H horses. I believe AQHA should ban N/H horses from being registered, and end this problem for good. As long as N/H horses are allowed to be registered we will continue hearing this kind of stories. I have a foal with Impressive in his sires´s line. Since his sire is N/N there´s no change of my foal being possitive, which would have been a deal breaker for me. Besides, in every registration horses having Impressive explicitely state the HYPP status.