leading national advocate and thought leader for the nonprofit sector. Under Diane’s leadership, NCN has filed four landmark lawsuits to protect nonprofit funding and programs, achieved significant public policy wins, launched a major national narrative campaign to build public support for the vital work of nonprofits, doubled its team, and expended its network.

Diane has spent the entirety of her nearly 30-year career working for, with, and in support of nonprofits. Prior to joining NCN, Diane was president and CEO of the National Low Income Housing Coalition for nine years, leading multiple national campaigns to historic success. Diane has also held leadership roles at Enterprise Community Partners and the US. Department of Housing and Urban Development and worked to advance equitable public policies with Oxfam America and the Massachusetts Coalition for the Homeless. Diane also served over three years as a community development Peace Corps volunteer in rural Zambia. Diane was named Influencer of the Year by the Nonprofit Times (2025), one of DC’s most powerful women by the Washingtonian (2025 and 2026), and in Forbes 50 over 50 (2026).

network of nonpartisan coalitions (called “tables”) that work together to create a more accessible, inclusive, and representative democracy. Tamieka coordinates the voter registration and civic engagement plans of 35 partner organizations, and through the “table” provides infrastructure and capacity-building to support organizations in growing their voter registration and civic engagement programs. She was the Founding Director of the National Domestic Workers Alliance-Atlanta Chapter, where she developed a base of African-American domestic workers advocating for respect, recognition, and inclusion in labor protections for all domestic workers.