In a significant constitutional ruling, the United States Supreme Court has upheld the principle of birthright citizenship, rejecting President Donald Trump's executive order that sought to narrow who is automatically recognized as a citizen at birth. The June 27, 2025 decision in CASA v. Trump represents a pivotal moment in American immigration law and constitutional interpretation.

The Executive Order and Legal Challenge

President Trump signed Executive Order 14160 on his first day back in office, January 20, 2025. The order aimed to redefine the 14th Amendment's citizenship clause by denying birthright citizenship to children born in the United States when the mother was unlawfully present or the father was not a citizen or lawful permanent resident.

The 14th Amendment states: "All persons born or naturalized in the United States and subject to the jurisdiction thereof, are citizens of the United States." Trump's executive order attempted to interpret "subject to the jurisdiction thereof" in a manner that would exclude certain categories of children born on American soil.

Multiple states and advocacy organizations immediately filed legal challenges. Washington state led one of the primary cases, arguing the executive order violated longstanding constitutional precedent established by the Supreme Court in the 1898 case United States v. Wong Kim Ark.

The Supreme Court's Decision

The Supreme Court, in a closely divided ruling, determined that the President lacks the constitutional authority to unilaterally redefine birthright citizenship through executive action. The majority opinion emphasized that the 14th Amendment's language is clear and has been consistently interpreted for over a century.

The ruling did not change the constitutional guarantee of birthright citizenship. Under the 14th Amendment, anyone born in the United States continues to be recognized as a U.S. citizen, regardless of their parents' immigration status.

Trump's Response: Turn to Congress

Following the Supreme Court's decision, President Trump immediately pivoted to Congress, urging lawmakers to pursue legislative action to end birthright citizenship. Writing on Truth Social, the President declared: "No long, drawn-out constitutional amendments are needed! Congress should start TODAY working to end birthright citizenship, which is costly and unfair to our country."

Trump pledged his "complete and total support" for any congressional effort to address the issue, though constitutional scholars note that any legislative attempt to eliminate birthright citizenship would face the same 14th Amendment challenges that defeated the executive order.

Implications for Immigration Policy

The ruling preserves a cornerstone of American identity that dates back to the Reconstruction era. Secretary of State Marco Rubio himself is a birthright citizen, as were countless other prominent Americans throughout history, demonstrating the principle's deep roots in the American experience.

Conservative legal scholars remain divided on the path forward. Some argue that a constitutional amendment—requiring two-thirds majorities in both chambers of Congress and ratification by three-fourths of state legislatures—is the only viable route to changing birthright citizenship. Others contend that Congress could pass legislation defining "subject to the jurisdiction thereof" more narrowly, though such legislation would almost certainly face immediate legal challenges.

What Comes Next

The Biden-era court's composition means birthright citizenship remains protected by constitutional interpretation. However, the closeness of the vote—with Trump's appointees largely dissenting—suggests that future court compositions could revisit the question.

For now, the principle that has defined American citizenship since the ratification of the 14th Amendment in 1868 remains intact. Children born on American soil will continue to be American citizens, a practice that distinguishes the United States from many other nations and reflects the country's founding ideals of opportunity and inclusion through lawful processes.