Many policy papers have been written on your topics by government agencies and interest groups. These reports can help you identify the major issues and players engaged in discussing your topic.
The Congressional Research Service (CRS), a branch of the Library of Congress, produces excellent reports on a wide of topics including health care policy. The reports are designed for policymakers who are working on legislation or study public policy issues.
Research papers written by the Library of Congress for the use of Congress. Provide objective, non-partisan analysis of public policy issues before the legislature. Full text PDF of reports.
The audit arm of Congress, the Government Accountability Office researches the effectiveness of government programs and government spending. Excellent for understanding the effectiveness/outcomes of government programs.