This document summarizes the changes made to the United States' Federal Strategic Plan to Prevent and End Homelessness (Opening Doors) in its 2015 amendment. Key changes include updating the goal of ending chronic homelessness from 2015 to 2017, clarifying the role of Medicaid in financing permanent supportive housing, and adding strategies around using data to improve homelessness programs and services. The amendment strengthens the original plan by incorporating new evidence and strategies while carrying forward previous changes made in 2012.