These briefs generally argued:
- The Citizenship Clause plainly protects birthright citizenship,
- United States v. Wong Kim Ark controls the issue.
- and the executive branch cannot unilaterally narrow constitutional protections of citizenship.
Trump Represented by:
The Department of Justice (DOJ)
Barbara Represented by:
The American Civil Liberties Union (ACLU)
Amicus Briefs Supporting Trump / Petitioners
Reported as approximately 18 amici curiae filings supporting the Trump administration’s position. These reportedly included:
- The Claremont Institute’s Center for Constitutional Jurisprudence (Proff. John Eastman)
- Federation for American Immigration Reform (FAIR)
- Gun Owners of America
- Citizens United
- Richard Epstein
- Hans von Spakovsky
- Ilan Wurman
- Ted Cruz
- Eric Schmitt
- Republican members of Congress
- Republican-led states and territories (reported as roughly 23 states/territories)
Amicus Briefs Supporting Barbara / Respondents
- NAACP
- National Urban League
- League of Women Voters
- Lawyers’ Committee for Civil Rights Under Law
- labor unions,
- immigration rights organizations,
- legal scholars,
- sociology/economics/political science professors,
- former Republican officials,
- local governments,
- Catholic immigration organizations,
- and reportedly over 200 aligned nonprofits and advocacy groups.