Richie Diesterheft / Wikimedia Commons
Why It Matters
The Supreme Court handed the Trump administration a significant legal victory Thursday, ruling that noncitizens physically standing on the Mexican side of a port of entry have no statutory right to asylum processing from U.S. immigration officials. The decision strengthens the federal government’s ability to manage asylum intake at the southern border and preserves a controversial policy tool known as “metering” for potential future use.
What Happened
In a 6-3 decision split along ideological lines, the Court held that an asylum seeker does not legally “arrive” in the United States until crossing into its territory — meaning those waiting at ports of entry on Mexican soil cannot claim the inspection rights afforded under federal immigration law.
Justice Samuel Alito authored the majority opinion, writing that the phrase “arrives in the United States” carries its plain meaning: “A person arrives in a geographic location only when he enters it.” The ruling interprets the Immigration and Nationality Act as withholding any entitlement to inspection for noncitizens who remain on Mexico’s side of the border, even at designated entry points.
The case arose from legal challenges to “metering,” a policy that limits how many asylum seekers can present themselves at ports of entry on a given day. Although the metering policy is not currently in effect, the government argued it needed the Court’s blessing to keep the option available going forward. Vivek Suri argued on behalf of the administration that metering must remain a viable policy instrument.
Oral arguments were heard in March, and Thursday’s ruling delivers the administration a clear win heading into a summer already defined by aggressive border enforcement measures.
James Percival, general counsel for the Department of Homeland Security, said the ruling “opens up an important tool to continue securing our southern border.”
The Dissents
The three liberal justices — Sonia Sotomayor, Elena Kagan, and Ketanji Brown Jackson — opposed the ruling, though they registered their objections differently. Justice Sotomayor produced a 35-page dissent arguing the policy violates federal refugee law and warning of humanitarian consequences. She invoked the historical case of the M.S. St. Louis, a ship carrying more than 900 Jewish refugees during World War II that was turned away from U.S. shores — a decision that contributed to the deaths of 254 of those passengers in the Holocaust.
Justice Jackson wrote separately, taking the position that the Court should not have decided the case at all, raising procedural concerns about the majority’s willingness to rule on a policy that is currently not in force.
The three liberal justices collectively argued that the 1980 Refugee Act — the federal law governing asylum in the United States — was designed to prevent exactly the kind of categorical exclusions the administration now seeks to enforce.
By the Numbers
- 6-3 — the vote tally, reflecting a clean conservative-liberal split among the justices
- 35 pages — the length of Justice Sotomayor’s dissent
- 1980 — the year Congress passed the Refugee Act, the central statute at issue
- 900+ — Jewish refugees aboard the M.S. St. Louis, cited in dissent as a cautionary precedent
Zoom Out
The ruling is the latest in a series of high-court decisions shaping the legal boundaries of executive power over immigration and national security. The Trump administration has pursued an aggressive enforcement posture since taking office, and the Court’s conservative majority has repeatedly backed the administration’s legal interpretations in contested areas of federal law. Last week, the Court also sided with Second Amendment rights in a separate landmark case, signaling the conservative majority’s continued influence across a range of policy areas.
Border security advocates argue Thursday’s decision gives the executive branch the flexibility it needs to prevent overwhelmed ports of entry from becoming de facto processing centers. Critics contend it narrows the legal pathways available to people fleeing genuine persecution.
What’s Next
While the metering policy is currently defunct, Thursday’s ruling clears the legal path for the administration to reinstate it or deploy similar controls at ports of entry. DHS is expected to evaluate how the decision fits into its broader border management framework. Future legal challenges to any reinstated metering policy would now face the additional hurdle of the Court’s clear statutory interpretation.
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