Court will hear oral arguments on Tuesday in Michigan case . The justices are expected to rule by the end of June whether a state law that requires voters who sign up for health insurance through their jobs or government programs such as Medicaid, food stamps and unemployment benefits Michigan referendum banned race and sex discrimination in admission decisions .
Court will hear oral arguments on Tuesday in Michigan case . Challenge again raises thorny , unresolved questions over race . Michigan referendum banned race and sex discrimination in admission decisions .