CINCINNATI - A lawsuit brought by a manufacturer of high-speed cigarette rolling machines against federal government entities was a preemptive attempt to avoid taxes that does not fall under the exceptions to such litigation barred by the Anti-Injunction Act (AIA), the Sixth Circuit U.S. Court of Appeals said Aug. 20, vacating an injunction issued by a lower court (Ryo Machine LLC, et al. v. U.S. Department of Treasury, et al., No. 11-3163, 6th Cir.; 2012 U.S. App. LEXIS 17634).