A coalition of civil rights and immigration advocacy organizations, including the American Civil Liberties Union (ACLU), has filed a lawsuit challenging an executive order issued by President Donald Trump aimed at ending birthright citizenship. The legal action, initiated on Monday shortly after the order was signed, contests the administration’s attempt to revoke automatic U.S. citizenship for children born in the United States to parents who are undocumented or on temporary visas.

The executive order specifies that the federal government will no longer recognize citizenship for children born in the U.S. to such parents, applying to births occurring 30 days after the order’s enactment. Attorneys for the coalition argue that this measure threatens to deny these children their citizenship rights, leaving them vulnerable to exclusion, deportation, and a lifetime of uncertainty in the only country they have known.

In their statement, the attorneys criticized the order as unconstitutional, emphasizing that the U.S. Constitution and Congress—not the president—determine who qualifies for citizenship. The coalition is urging a federal court in New Hampshire to declare the executive order illegal and to issue temporary and permanent injunctions to prevent its enforcement.

The lawsuit also highlights the potential harm to families expecting children who could be rendered stateless under the new rule. Attorneys warned that the order could strip these children of legal and practical recognition, jeopardizing their future stability and rights.