A good read from Kyle Bryant's blog regarding new Triathlon guidelines.
New PC Open Division Guidelines:
“Not all athletes with ADA defined disabilities fit into a Paratriathlon medical classification or are able to follow the strict equipment usage rules of Paratriathlon. Accordingly, USA Triathlon offers a PC Open Division as an accommodation for those persons who wish to participate in a sanctioned event but who will not follow some Paratriathlon rules.”