Good Evening,
On page 294 of the new 2008 ASPC/AMHR rulebook in the AMHR section:
Rule #5: No post entering of youth classes (AMHR Nationals) Neither horse nor youth can be changed after the closing date (the date to enter the AMHR National Show-August 1st, 2008)
Rule #6: Youth qualifying for National Show---To qualify for the National Show, the youth and miniature horses entered must have shown together under two (2) judges prior to the National Show. The youth must qualify by showing that horse in a youth class or classes. In addition, the horse must also qualify as normal (show under 4 judges at two seperate shows) for the AMHR Nationals.
This rule was put into place three or four years back to stop kids from just picking up horses to show at the National show thus causing an over-load of classes. Some complaints were that the kids would go to a trainer, ask to show a horse on his show string (youth may have never touched the horse in the past) and compete in the youth division with that horse. Some parents complained that it wasn't fair, so the reason behind the rules now.
Hope this helps.
Karen