On March 4, 2022, a federal judge ruled that the federal Tax Injunction Act (“TIA”) bars a challenge to Maryland’s Digital Advertising Gross Revenues Tax (“Digital Ad Tax”) from proceeding in federal district court, but does not bar the plaintiffs from challenging Maryland’s prohibition on passing the tax to a customer “by means of a separate fee, surcharge, or line-item” (the “Pass-Through Prohibition”). Chamber of Commerce of the United States of America v. Franchot, No.…