Amicus briefs and the Solicitor General

In the 37 decided cases we track, the side backed by the Solicitor General won 20 of 30, and the side with more merits-stage amicus briefs won 19 of 35. Sides are read from each brief's cover page where available.

Repeat filers

United States — 35 briefs; on the winning side in 9 of 10 decided merits cases
Constitutional Accountability Center — 22 briefs; on the winning side in 5 of 15 decided merits cases
America's Future, et al — 16 briefs; on the winning side in 5 of 6 decided merits cases
Cato Institute — 15 briefs; on the winning side in 4 of 6 decided merits cases
The Chamber of Commerce of the United States of America, et al — 15 briefs; on the winning side in 3 of 3 decided merits cases
Washington Legal Foundation — 13 briefs; on the winning side in 2 of 5 decided merits cases
Advancing American Freedom, Inc., et al — 12 briefs; on the winning side in 3 of 4 decided merits cases
United States Conference of Catholic Bishops — 11 briefs; on the winning side in 3 of 4 decided merits cases
American Center for Law and Justice — 10 briefs; on the winning side in 2 of 3 decided merits cases
Members of Congress — 9 briefs; on the winning side in 0 of 5 decided merits cases
The Buckeye Institute — 9 briefs; on the winning side in 2 of 2 decided merits cases
Federation for American Immigration Reform — 8 briefs; on the winning side in 2 of 2 decided merits cases
NC Values Institute — 8 briefs; on the winning side in 3 of 3 decided merits cases
National Association of Criminal Defense Lawyers — 8 briefs; on the winning side in 2 of 2 decided merits cases
Pacific Legal Foundation, et al — 8 briefs; on the winning side in 1 of 2 decided merits cases
West Virginia, et al. — 8 briefs; on the winning side in 1 of 1 decided merits cases
Liberty Justice Center — 7 briefs; on the winning side in 5 of 5 decided merits cases
Protect the First Foundation — 7 briefs
America First Legal Foundation — 6 briefs; on the winning side in 1 of 2 decided merits cases
Foundation for Moral Law — 6 briefs; on the winning side in 2 of 2 decided merits cases
Institute for Justice — 6 briefs; on the winning side in 1 of 3 decided merits cases
Liberty Counsel — 6 briefs; on the winning side in 3 of 3 decided merits cases
Manhattan Institute et al — 6 briefs; on the winning side in 1 of 1 decided merits cases
National Women's Law Center — 6 briefs; on the winning side in 0 of 4 decided merits cases
New Civil Liberties Alliance — 6 briefs; on the winning side in 2 of 3 decided merits cases

Amicus Briefs & the Solicitor General

Who files friend-of-the-court briefs in the cases we track, which side they support, and how those sides fared — plus the position of the federal government's lawyer, the Solicitor General, who participates in most significant cases.

Amicus Briefs & the Solicitor General

Do amici and the SG predict the winner?

This term's cases

Repeat filers

How sides are determined