President Donald Trump left the Supreme Court during oral arguments on birthright citizenship, raising concerns about the administration's restrictions on the policy.
The case centers on an executive order signed by Trump, which seeks to deny citizenship to children born in the United States to parents who are undocumented or in the country temporarily.
Supreme Court justices appeared doubtful of the Trump administration's position, with both conservative and liberal justices pressing the administration on the legal and practical implications of the policy.
The case comes before the court after multiple lower courts blocked the order from taking effect nationwide, relying on long-standing precedent, particularly the Supreme Court's 1898 decision in United States v Wong Kim Ark.
The dispute centers on the interpretation of the 14th Amendment, which states that children born or naturalized in the United States are citizens, regardless of their parents' nationality.