NEW ORLEANS - The Fifth Circuit U.S. Court of Appeals on Oct. 26 reversed and vacated a Louisiana federal court's decision to certify a class of governmental entities suing over cellular phone billing after finding that "it effectively certified an 'opt in' class, which is impermissible under [Federal] Rule [of Civil Procedure] 23" (Louis Ackal, Sheriff and Ex Officio Tax Collector of Iberia Parish, et al. v. Centennial Beauregard Cellular L.L.C, et al., No. 12-30084, 5th Cir.; 2012 U.S. App. LEXIS 22254).