A divided U.S. Supreme Court declined to reconsider two decades-old decisions upholding the constitutionality of mandatory membership in state bar associations, but some attorneys believe the challenges are likely to continue.

“While the the Supreme Court declined to hear this specific case, this issue is going to rear its head again, and I could see the day when mandatory bars are deemed to be unconstitutional,” Bast Amron attorney and general counsel Brian Tannebaum in Miami said Tuesday. He frequently handles Florida Bar ethics and licensing cases.