The legal challenges to the ACA just keep on coming. We discussed the mixed bag that was the Hobby Lobby decision last month. For July, it is Halbig v. Burwell. Here is the skinny: In a 2-1 opinion, the Court held that the Internal Revenue Service regulation authorizing tax credits in federal exchanges was invalid. Judge Griffith, writing for the court, concluded, “the ACA unambiguously restricts the section 36B subsidy to insurance purchased on Exchanges ‘established by