Michigan Attorney General Dana Nessel moved to dismiss an August lawsuit arguing the state's income tax drop from 4.25% to 4.05% should be permanent. The Mackinac Center for Public Policy sued State Treasurer Rachael Eubanks over an interpretation of a 2015 law requiring the individual income tax rate to decrease automatically if year-over-year state general fund revenues increase at a greater rate than inflation. The group represents the Associated Builders and Contractors of Michigan, National Federation of Independent Business, Inc., Sen. Ed McBroom, Rep. Dale Zorn and six individual taxpayers.