Skip to main content

The context you need, when you need it

When news breaks, you need to understand what actually matters — and what to do about it. At Vox, our mission to help you make sense of the world has never been more vital. But we can’t do it on our own.

We rely on readers like you to fund our journalism. Will you support our work and become a Vox Member today?

Join now

The Supreme Court takes up the most unconstitutional thing Trump has done

There is no plausible argument that Trump’s attack on birthright citizenship is constitutional.

US-POLITICS-JUSTICE-TRUMP-CITIZENSHIP-PROTEST
US-POLITICS-JUSTICE-TRUMP-CITIZENSHIP-PROTEST
Olga Urbina and her son Ares Webster participate in a protest outside the US Supreme Court over President Donald Trump’s move to end birthright citizenship in May 2025, when the court heard a previous case dealing with Trump’s executive order.
Drew Angerer/AFP via Getty Images
Ian Millhiser
Ian Millhiser is a senior correspondent at Vox, where he focuses on the Supreme Court, the Constitution, and the decline of liberal democracy in the United States. He received a JD from Duke University and is the author of two books on the Supreme Court.

Last January, when Reagan-appointed Judge John Coughenour became the first federal judge to block President Donald Trump’s attack on birthright citizenship, he did not mince words. “I’ve been on the bench for over four decades,” Coughenour said. “I can’t remember another case where the question presented is as clear as this one is.”

Coughenour was the first judge to reach this conclusion, but he was hardly the last. In the last 11 months, numerous judges have reached the only conclusion that the Constitution’s text permits: Donald Trump does not have the power to strip Americans who are born in this country of their citizenship.

The Supreme Court took its sweet time before deciding to take up this issue, but, on Friday, the Court finally announced that it would hear Trump v. Barbara, a case asking whether the Constitution permits Trump to unilaterally denationalize Americans born in the United States. If the justices are capable of behaving in a nonpartisan manner, Trump will lose this case 9-0.

On the first day of his second term, Trump issued an executive order purporting to strip citizenship from some newborn Americans. The order, entitled “Protecting the Meaning and Value of American Citizenship,” claimed to remove citizenship from two classes of Americans. The first is children born to undocumented mothers whose fathers are not citizens or lawful permanent residents of the United States. The second is children with fathers who have similar immigration status and whose mothers were lawfully but temporarily present in the US at the time of birth.

There are few questions in US law that are more settled than the question of whether babies born in the United States are citizens of this country. In the immediate aftermath of the Civil War, the nation ratified the 14th Amendment. Its first line is, “All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside.”

“All persons” means all persons. That includes people with undocumented mothers or whose parents otherwise have an immigration status that Donald Trump does not like.

The “subject to the jurisdiction” exception, explained

The 14th Amendment’s text contains one exception to this general rule: Only people “subject to the jurisdiction” of the United States at the time of their birth may claim birthright citizenship. Someone is subject to US jurisdiction if they are bound by US law. So, if the Supreme Court were to conclude that Trump’s disfavored Americans are not subject to US jurisdiction, that would mean that he would be unable to deport them, because they are immune from federal immigration law.

Which isn’t to say that this “subject to the jurisdiction” exception is completely empty. As the Supreme Court explained more than a century ago in United States v. Wong Kim Ark (1898), it is a narrow-but-real exception that applies to limited groups of people.

When the 14th Amendment was ratified in 1868, the most significant group that was excluded from citizenship was “children of members of the Indian tribes owing direct allegiance to their several tribes.” At the time, US relations with indigenous tribal nations were often tense and even resulted in military conflict; the Battle of Little Bighorn took place eight years after the amendment was ratified.

So, it made sense not to give citizenship to people who may be hostile to the US in 1868, although the United States changed its policy on tribal citizens more than 100 years ago. The Indian Citizenship Act of 1924 bestowed citizenship on “all noncitizen Indians born within the territorial limits of the United States.”

Additionally, Wong Kim Ark identified a few other groups of children born in the United States who are not subject to its laws: “children of foreign sovereigns or their ministers, or born on foreign public ships, or of enemies within and during a hostile occupation of part of our territory.” The first of these exemptions is still occasionally relevant today. Last August, for example, a federal appeals court concluded that a man born in New York City, whose father was a Nicaraguan diplomat with diplomatic immunity from US law at the time, is not a citizen of the United States.

But, the Constitution’s text is clear that everyone born in the US who is not immune from its laws is a citizen. And Trump’s lawyers can only get around this fact by pretending that the 14th Amendment says something else. In their petition asking the justices to hear the birthright citizenship cases, for example, Trump’s legal team claims that the 14th Amendment only “extends to children who are ‘completely subject’ to the ‘political jurisdiction’ of the United States, meaning that they owe ‘direct and immediate allegiance’ to the Nation and may claim its protection.”

This might be a plausible argument if the words “completely” and “political” actually appeared in the 14th Amendment’s text. But, they do not. Trump’s argument literally rests on an attempt to add nonexistent words to the Constitution.

If the justices have any integrity at all, or any loyalty to the rule of law, they will reject this frivolous argument.

More in Politics

Podcasts
The Supreme Court abortion pills case, explainedThe Supreme Court abortion pills case, explained
Podcast
Podcasts

How Louisiana brought mifepristone back to SCOTUS.

By Peter Balonon-Rosen and Sean Rameswaram
Politics
Trump’s China policy is nearly the exact opposite of what everyone expectedTrump’s China policy is nearly the exact opposite of what everyone expected
Politics

As Trump heads to China, attention and resources are being shifted from Asia to yet another war in the Middle East.

By Joshua Keating
Politics
Are far-right politics just the new normal?Are far-right politics just the new normal?
Politics

Liberals are preparing for a longer war with right-wing populists than they once expected.

By Zack Beauchamp
The Logoff
Flavored vapes doomed Trump’s FDA headFlavored vapes doomed Trump’s FDA head
The Logoff

Why Marty Makary is out at the FDA, briefly explained.

By Cameron Peters
Politics
Virginia Democrats’ irresponsible new plan to save their gerrymanderVirginia Democrats’ irresponsible new plan to save their gerrymander
Politics

Democrats just handed the Supreme Court’s Republicans a loaded weapon.

By Ian Millhiser
The Logoff
Can Trump lower gas prices?Can Trump lower gas prices?
The Logoff

What suspending the gas tax would mean for you, briefly explained.

By Cameron Peters