Have you ever heard of spirit of the horse? Its mostly england based but they have some lovely fresians that they show i think 10 months of the year. It may be an expensive route but you will be getting some fantastic friesians. Also im not sure if they have a website but look up spirit of the horse on google. They may have some over in the US. I know the lady that ownes them and managed to see them in action when they were back at base and she used to travel all over. It might be a good idea to see if they have any over here. If not i hope you have results looking.
:~: A Horse Is An Angel Without Wings :~: