No, it’s not “shenanigans”. It is merely the rules of how things work in US primaries. Trump doesn’t like the rules, ya know. So naturally, he’ll sue. It’s one thing he’s good at and noted for. Well, that, vulgarities and whining.
Maybe Trump will sue himself over not understanding the rules.
I can promise, international trade agreements that Trump claims he can master are far more complicated than Louisiana Republican Party rules.
What this reflects is the "vote" is closer to a Republican Hierarchy Dog and Pony Show than an election by the people.
Yet we, as voters, are told how important our vote is....yea, right.