Another Litigious Parent wrote:
If I was a well-to-do parent, with a high performing HS child, and I was denied participation in the meet while Cain was allowed participation...then I would definitely sue the meet for inequality.
"Inequality" isn't a cause of action. Private entities are not required to treat you fairly or even follow their own rules. (With rare exceptions.) If I were BU's lawyer, and you sued, I'd probably seek sanctions for filing a frivolous lawsuit. (Obviously it depends on what your attorney manages to come up with.)
There's no need to tie yourself up in knots about whether the rule, by its terms, actually applies to Cain. The fact is, regardless of what the rule says, the people enforcing it have decided that Cain gets to run. That's the end of the story. The fact that administrators have the freedom to disregard their rules is a good thing, and one of the reasons that they don't need to hire a staff of lawyers to write rules that anticipate every situation. If a rule, by its terms, is going to work well 99% of the time, you don't need to bother with the rare exceptions in drafting it. Laws are different. Much of the work of drafting legislation is worrying about the unusual applications of a law or its unintended consequences.