Des Moines Register: Gov. Kim Reynolds today signed into law a major realignment of Iowa’s tax system, achieving one of her top legislative priorities in time for a national speech introducing herself to a conservative audience. Over the next few years, the law will lower Iowa’s top income tax rate until all Iowans pay a 3.9% flat tax starting in 2026. Reynolds’ signing of the bill comes the same day she is set to deliver the Republican response to President Joe Biden’s State of the Union address.