By: Alix JamesOn Wednesday, U.S. District Judge William Caldwell permanently enjoined enforcement of Pennsylvania’s prohibition on campaign expenditures by banks, corporations or unincorporated associations (such as labor unions) as against contributions these entities make to independent expenditure-only committees. See General Majority Pac v. Aichele, No.: 1:14-CV-332 (M.D. Pa. Aug. 13, 2014). Thus, Pennsylvania now joins its sister states in removing all limits on corporate contributions to Super PACs.