Spokesperson

Chief Counsel Zachary Heiden

Zachary Heiden

Chief Counsel

he/him

Media Contact

Samuel Crankshaw, Communications Director, ACLU of Maine, [email protected]

WASHINGTON – Legal organizations representing a class of all babies who would be subject to President Trump’s harmful, unconstitutional, and unlawful executive order restricting birthright citizenship filed their Supreme Court merits brief on Thursday evening, outlining the myriad reasons the court should strike down the order once and for all.

The Supreme Court will hear oral argument in the case, Trump v. Barbara, on April 1.

The Barbara case is a nationwide class action brought by the ACLU of Maine, ACLU Immigrants’ Rights Project, ACLU of Massachusetts, ACLU of New Hampshire, Legal Defense Fund, Asian Law Caucus, and Democracy Defenders Fund.

Courts have repeatedly blocked the Trump administration from implementing the executive order, finding it violates the Constitution, over a century of Supreme Court precedent, and a longstanding federal statute.

Because of the Constitution’s birthright citizenship guarantee and federal laws, nearly every child born on U.S. soil is automatically a U.S. citizen, regardless of their parents’ status, wealth, or origin.

In their brief filed today, the groups write that, “For generations, all three branches of the U.S. government and the American people have understood, applied, and relied on that constitutional bedrock — embodying our American values of equality and opportunity and contributing to the thriving of our Nation.”

Indeed, it has been a fixture of American identity since the nation’s founding and was firmly enshrined in the 14th Amendment.

The Trump administration, the brief notes, “is asking for nothing less than a remaking of our Nation’s constitutional foundations.”

Read the full brief here.

The following is comment from the co-counsel team:

“The 14th Amendment is clear: babies born in the U.S. are U.S. citizens,” said Zach Heiden, chief counsel at the ACLU of Maine. “Today’s brief demonstrates that birthright citizenship is a longstanding American principle that all three branches of government have recognized for nearly two centuries. We hope the Supreme Court will uphold the plain language of the Constitution and stop the president’s attempt to upend one of our nation’s core tenets.”

“Citizenship by birth and not parentage is one of the most cherished foundation stones in the U.S. Constitution. It has been settled by constitutional amendment since 1868 and by Supreme Court precedent since 1898,” said ACLU National Legal Director Cecillia Wang, who will argue the case before the Supreme Court. “The framers of the 14th Amendment were specifically acting to prevent government officials from interfering with native-born Americans' citizenship and they would be dismayed by what the president is trying to do today.”

“We are proud to stand with this coalition before the Supreme Court to quell the administration’s attempt to resurrect a racialized notion of who gets to be an American citizen,” said Ashley Burrell, senior counsel at LDF. “Birthright citizenship was originally established in our Constitution to finally ensure citizenship for all, including Black people who were forced to endure hundreds of years of bondage.  The 14th Amendment makes it clear that all children born in this country are entitled to the rights and protections of American citizenship, and we will continue fighting to ensure this is not undermined.”

“Birthright citizenship is what makes every child born here unequivocally American,” said Aarti Kohli, executive director of Asian Law Caucus. “Without it, ordinary milestones — getting a Social Security number, a passport, or access to federal programs — become obstacles for the thousands of children who could be born into legal limbo from day one. Asian Americans have fought for this constitutional promise before and won. The Asian Law Caucus is proud to fight for it again before the Supreme Court.”

“Today, DDF and our partners filed a Supreme Court brief defending a basic American principle: birthright citizenship,” said Tianna Mays, legal director for Democracy Defenders Fund. “Trump’s executive order is flatly unconstitutional, directly contradicts Supreme Court precedent, and conflicts with federal law, and our brief makes that clear. We look forward to making this argument before the court and are confident they will affirm this basic right, which has stood for over a century.”

“We are continuing to fight this cruel executive order to ensure that every child born in the United States has their right to citizenship protected instead of being relegated to a permanent, multigenerational subclass of people born in the U.S. but who are denied full rights,” said SangYeob Kim, director of the Immigrants’ Rights Project at the ACLU of New Hampshire.

“The Trump administration is attempting to destroy our shared values of freedom, opportunity, and dignity for all by treating millions of American babies as second-class citizens. That's unconstitutional, unlawful, and just plain wrong. The Supreme Court should throw out the administration's divisive, degrading, and clearly unconstitutional executive order and reaffirm the principle of birthright citizenship — a bedrock right in the United States and a cornerstone of our democracy,” said Jessie Rossman, legal director for the ACLU of Massachusetts.

Related Content

Court Case
Feb 20, 2026
A demonstrator looks up at her sign (which reads "Citizenship is a Birthright") during a rally outside the Supreme court building demanding the court uphold the 14th Amendment to the U.S. Constitution.
  • Immigrants' Rights

Barbara v. Trump – Class Action to Protect Birthright Citizenship

We're suing the Trump administration for trying to end birthright citizenship, a core American principle that is outlined in the plain language of the 14th Amendment. The case will be argued before the U.S. Supreme Court on April 1, 2026.
Press Release
Dec 05, 2025
ACLU: Share image
  • Immigrants' Rights

Supreme Court to Hear High-Stakes Maine Case on Birthright Citizenship

Immigrants’ rights advocates will argue critical case before the Supreme Court later this term. Courts have uniformly rejected President Trump’s attempts to strip away a core constitutional protection and blocked his birthright citizenship executive order.
Issue Areas: Immigrants' Rights
Press Release
Jul 10, 2025
Birthright Citizenship Case Image
  • Immigrants' Rights

Federal Court Blocks Trump Birthright Citizenship Order, Certifies Nationwide Class Protecting All Impacted Families

The ruling stems from a nationwide class-action lawsuit filed June 27, immediately after a Supreme Court ruling that potentially opened the door for partial enforcement of the executive order.
Issue Areas: Immigrants' Rights
Press Release
Jul 08, 2025
Birthright Citizenship Case Image
  • Immigrants' Rights

Thursday: Federal Court Hearing in New Nationwide Class-Action Lawsuit Challenging Trump Birthright Citizenship Order

A federal court in New Hampshire will hear arguments in our new nationwide class-action lawsuit challenging the Trump administration’s executive order restricting birthright citizenship.
Issue Areas: Immigrants' Rights