American Constitution Society

The American Constitution Society (ACS) is a progressive legal organization. ACS was created as a counterweight to, and is modeled after, the Federalist Society, and is often described as its progressive counterpart.

ACS hosts conferences, sponsors chapters of law students and practicing attorneys, engages in education projects, and advocates for progressive judicial nominations.

Founded in 2001 following the U.S. Supreme Court decision ''Bush v. Gore'', ACS is headquartered in Washington, D.C. Former Democratic U.S. Senator Russ Feingold served as the organization's president from 2020 to 2025.

The group's stated mission is "to support and advocate for laws and legal systems that redress the founding failures of our Constitution, strengthen our democratic legitimacy, uphold the rule of law, and realize the promise of equality for all, including people of color, women, LGBTQ+ people, people with disabilities, and other historically excluded communities." Provided by Wikipedia