In February 2026, one of us observed in this journal that the executive order on birthright citizenship had been met with overwhelming skepticism from the legal profession. “Many insisted that there was not even a genuine debate to be had.” But as the litigation progressed, the “overwrought rhetoric” that initially greeted the order gave way to a “sober acknowledgement” that the government presented a credible legal case. In a similar way, some commentators confidently predicted that, in Trump v. Barbara, the Supreme Court would unanimously reject the government’s argument. As it turned out, only a bare majority of the Court concluded that the “children born of parents unlawfully or temporarily present in the United States” are born “subject to the jurisdiction” of the United States. Four Justices rejected the facial constitutional challenge to the order because, in their view, the Fourteenth Amendment does not guarantee birthright citizenship to all children born to aliens unlawfully or temporarily present. Following the close decision in Barbara, the originalist argument of the dissenters—that the Fourteenth Amendment confers a more limited right to birthright citizenship than the doctrine now suggests—appears more credible and serious than it did before. For that reason, instead of persuading “the contending sides of a national controversy” to accept “a common mandate rooted in the Constitution,” the decision will likely intensify an ongoing debate. Contrary to what some have suggested, that will make the originalist arguments more rather than less important.
The February essay also identified three “other questions that deserve aSention,” which we revisit in this essay in reverse order. First, “what is the effect of the statutory enactment of the language of the Citizenship Clause?” Second, “how does the requirement that birth or naturalization occur ‘in the United States’ affect aliens detained at the border but released into the country pending a hearing?” Third, how does constitutional birthright citizenship interact with “the availability of dual citizenship?” Revisiting the role of originalism and these three questions in the wake of Barbara provides a guide to forthcoming debates.
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