[JURIST] The US Supreme Court [official website] ruled [opinion, PDF] Monday in Arizona Free Enterprise Club’s Freedom Club PAC v. Bennett [Cornell LII backgrounder] that an Arizona campaign finance regulation that provided publicly financed candidates with additional government subsidies, which are triggered by independent expenditure groups’ speech against such candidates or by the candidates’ privately financed opponents, violates the First Amendment [text]. The court held 5-4 that such a system substantially burdens political speech and is not sufficiently justified by…