This issue brief provides an overview of the Section 1115 Medicaid demonstration waivers obtained by six states – Arkansas, Iowa, Michigan, Indiana, New Hampshire and Montana — that are pursuing alternative Medicaid expansions under the Affordable Care Act. It reviews key provisions related to premiums, cost sharing and benefits that have been approved in such waivers by the Centers for Medicare and Medicaid Services (CMS), and also notes those that have been turned down.