- Akidwa
- Alterna
- American Action Forum
- American Immigration Council
- American Jewish World Service
- Americas Society/Council of The Americas
- Analyst Institute
- Annie E. Casey Foundation
- Asian Americans/Pacific Islanders in Philanthropy
- Atlantic Philanthropies
- Bipartisan Policy Center
- Bridges to Opportunity Initiative
- California Civic Participation Funders
- California Endowment
- CAMBIO
- Campaign for Community Change
- Carnegie Corporation of New York
- Cato Institute
- Center for American Progress
- Center for Community Change
