This week, our In Focus section reviews updated reports issued by the Department of Health & Human Services (HHS) on Medicaid expansion enrollment from the “September 2016 Medicaid and CHIP Application, Eligibility Determination, and Enrollment Report,” published on December 1, 2016. Additionally, we review 2016 Exchange enrollment data from the HHS Office of the Assistant Secretary for Planning and Evaluation (ASPE) Issue Brief, “Health Insurance Marketplace 2016 Open Enrollment Period: February 2016 Enrollment Report,” and 2017 enrollment snapshot data through December 19, 2016, from the Centers for Medicare & Medicaid Services (CMS). Combined, these reports present a picture of Medicaid and Exchange enrollment at the end of 2016, with a look at progress towards 2017 Exchange enrollment.