What are you talking about? Citizens United was a 5-4 decision as to the parts everyone is mad about. The 4 dissents were Ginsberg, Kagan, Stevens, and Sotomayor. The liberals concurred with the conservatives as to a disclosure requirement, which, why wouldn’t they? They dissented as to the rest of the opinion. Unsurprisingly with the benefit of hindsight, the only justice who disagreed with the reporting requirements was Thomas.