489 U.S. 803 109 S.Ct. 1500 103 L.Ed.2d 891 Paul S. DAVIS, Appellantv.MICHIGAN DEPARTMENT OF TREASURY. No. 87-1020. Argued Jan. 9, 1989. Decided March 28, 1989. Syllabus In each of the years 1979 through 1984, appellant, a Michigan resident and former federal employee, paid state income tax on his federal retirement benefits in accordance with […]