Arizona is the eighth state to receive permission from the Trump administration to add work requirements to its Medicaid program, and after months of behind-the-scenes negotiations between state officials and CMS lawyers, CMS allowed the state to exempt some Native Americans from the requirements. Arizona initially asked that all Native Americans on Medicaid be excluded from its work-requirement program, and other states with large tribal populations that are seeking to implement work requirements have made similar requests. But CMS lawyers...