Gov. Reynolds and Republican state lawmakers have waged a string of attacks on workers’ unions in recent years. Last February, then-Gov. Terry Branstad signed into law a bill endorsed by then-Lt. Gov. Kim Reynolds curbing collective bargaining rights for thousands of public sector workers in the state. The law strips workers of the right to bargain over healthcare and other benefits and forces workers to recertify their union before each bargaining session. In March, Branstad signed into law a bill passed by the Republican legislature blocking all localities from raising their minimum wage, nullifying local wage increases that had been passed in Polk, Johnson, Linn and Wapello Counties.