The Congressional Research Service (CRS) works for the United States Congress, providing policy and legal analysis to committees and Members of both the House and Senate, regardless of party affiliation.
"The Congressional Research Service (CRS) does not provide direct public access to its reports, requiring citizens to request them from their Members of Congress. Some Members, as well as several non-profit groups, have posted the reports on their web sites. This site is not affiliated with the Congressional Research Service, but aims to provide integrated, searchable access to many of the full-text CRS reports that have been available at a variety of different web sites since 1990."
The Global Go To Think Tank Index is the result of an international survey of over 1,950 scholars, public and private donors, policy makers, and journalists who helped rank more than 6,500 think tanks using a set of 18 criteria developed by the TTCSP.
"ProPublica is an independent, non-profit newsroom that produces investigative journalism in the public interest. Its work focuses exclusively on stories with moral force. We do this by producing journalism that shines a light on exploitation of the weak by the strong and on the failures of those with power to vindicate the trust placed in them."
The Public Policy Institute of California (PPIC) is a nonprofit, nonpartisan think tank. We are dedicated to informing and improving public policy in California through independent, objective, nonpartisan research.
"Think Tank Search is a custom Google search of more than 600 think tank websites. For the purposes of this search, think tanks are defined as institutions affiliated with universities, governments, advocacy groups, foundations, non-governmental organizations, and businesses that generate public policy research, analysis, and activity."
"The term think tank has been used to describe both private and public organizations that provide advice to governments. A generally accepted definition would describe think tanks as organizations that are distinct from government and whose objective is to provide advice on a diverse range of policy issues through the use of specialized knowledge and the activation of networks."
Ladi, S. (2011). Think tanks. In B. Badie, D. Berg-Schlosser, & L. Morlino (Eds.), International encyclopedia of political science. (pp. 2608-2611). Thousand Oaks, CA: SAGE Publications, Inc. doi: http://dx.doi.org/10.4135/9781412959636.n604
PAIS contains references to over 460,000 journal articles, books, government documents, statistical directories, grey lit, research reports, conference reports, publications of international agencies, Internet resources.
GovTrack tracks the United States Congress. Follow the status of federal legislation or learn about your members of Congress -- GovTrack has information on all bills and votes going back over a decade, etc. ...
"Revealing Money's Influence on Politics -- MapLight is a nonprofit, nonpartisan research organization that reveals money's influence on politics. Elected officials collect large sums of money to run their campaigns, and they often pay back campaign contributors with special access and favorable laws. This common practice is contrary to the public interest, yet legal..."
"Mission: Inform, Empower & Advocate.
The Center for Responsive Politics is the nation's premier research group tracking money in U.S. politics and its effect on elections and public policy. Nonpartisan, independent and nonprofit, the organization aims to create a more educated voter, an involved citizenry and a more transparent and responsive government."