Mayhem
Banned
They're not making rules that trump the constitution. They're a business just like anyone else. And like other businesses, they have a code of conduct. Part of that code of conduct says that you can't go around making an ass out of yourself in public (i.e. making statements about not liking Black people). When Sterling bought the Clippers, he agreed to be bound by the league constitution. Now, that he has violated provisions in said constitution, they're rightfully taking action against him. Owning an NBA team is a privilege, not a right.
Also, as I explained before, this is not a first amendment issue. The United States government is not banning him from the league. The United States government will not be holding a vote with the other owners to determine if he has to sell the team. The NBA can police itself in matters like this. The only way the government would get involved would be if some of this went to court. Right now, everything is being handled by the NBA.
And the NBA, like other pro sports leagues, does not pay taxes. They are considered non-profit organizations. All profits go to employees and owners, and they pay taxes. The league itself, however, does not pay any taxes. So there would be no need to declare themselves tax free... they already are.
Wormie knows all this. He's just being his usual pain-in-the-ass self.
It's always the ones who squeal the loudest about the Constitution who show their complete ignorance of what's in it.