Story Highlights
- The Supreme Court ruled 6-3 that asylum seekers standing on Mexican soil have not legally “arrived in” the United States and therefore have no statutory right to apply for asylum.
- The decision revives “metering,” a policy that began under the Obama administration and was expanded under Trump before being rescinded by the Biden administration in 2021.
- Justice Sonia Sotomayor dissented sharply, calling the majority’s reasoning “illogical” and warning the policy created “dire humanitarian conditions” at the border in the past.
What Happened
The case, Mullin v. Al Otro Lado, was originally filed in 2017 by the immigrant rights organization Al Otro Lado along with 13 individual asylum seekers, challenging the legality of metering, a practice in which U.S. border officials physically block migrants from crossing into the United States at official ports of entry before they can make an asylum claim. Under federal immigration law, a noncitizen who “arrives in the United States” is entitled to apply for asylum and must be inspected by a federal immigration officer. The central legal question before the court was whether a migrant standing on the Mexican side of a border crossing, having not yet physically entered U.S. territory, qualifies as having “arrived.”
Writing for the six-justice conservative majority, Alito concluded that ordinary usage of the word “arrive” requires actual entry into a place, comparing it to a person standing at the threshold of a house or city. “In ordinary speech, no one would say that a person ‘arrives in’ a place… before the person enters that place,” Alito wrote. He emphasized that the court was not evaluating the wisdom or humanity of the metering policy itself, only the narrow statutory question of whether the law obligated officials to process asylum claims from individuals who had not yet crossed into American territory. The ruling reversed a federal appeals court decision that had previously found metering unlawful.
Justice Sotomayor, joined by Justices Elena Kagan and Ketanji Brown Jackson, issued a forceful dissent arguing that the majority’s interpretation defied common sense and the purpose of asylum law. Sotomayor wrote that it is “natural to say that asylum seekers are arriving… when they come to the threshold of a port of entry,” and pointed to evidence that metering historically had little to do with genuine capacity constraints at the border. She cited a whistleblower report alleging the policy was used as a pretext to deny migrants the opportunity to make legitimate asylum claims, contributing to dangerous, overcrowded encampments on the Mexican side of the border in years past.
Justice Jackson wrote a separate five-page dissent arguing the court should never have taken up the case at all, since metering is not currently in active use and the Trump administration has not announced concrete plans to formally reinstate it. She criticized the majority for what she called a “rush to greenlight this retired practice” before any actual policy change had been proposed. The ruling came down the same day as a separate 6-3 decision allowing the administration to strip Temporary Protected Status from Haitian and Syrian nationals, marking a notably consequential day for immigration law at the high court.
Why It Matters
This ruling fundamentally reshapes the legal landscape governing access to asylum at the southern border. By establishing that physical presence on U.S. soil is a prerequisite for asylum eligibility, the decision gives the executive branch substantially greater latitude to control the flow of asylum claims simply by managing where and how migrants are permitted to physically cross. Immigration policy experts note this effectively allows the government to use geography and border infrastructure as a tool for limiting humanitarian protections without needing new legislation.
For migrants and asylum seekers, the practical consequences could be severe. Rights groups have long argued that metering policies push desperate individuals toward more dangerous, unofficial crossing routes between official ports of entry, potentially increasing risks of exploitation, trafficking, and death in remote desert or river crossings. The ruling does not address these humanitarian concerns directly, as the majority explicitly limited its holding to statutory interpretation rather than policy judgment.
The decision also reinforces a broader pattern this term in which the Supreme Court’s conservative majority has consistently deferred to the executive branch’s authority over immigration and national security matters, often resolving cases through narrow textual readings of statutory language rather than weighing broader humanitarian or constitutional considerations. Legal scholars suggest this trend signals that future immigration disputes are increasingly likely to be decided on similarly technical grounds.
Economic and Global Context
The ruling carries significant implications for relations with Mexico, which would likely bear the practical burden of metering’s revival, as migrants turned back at U.S. ports of entry remain stranded on Mexican territory, often in border cities already strained by previous waves of migration. Mexican officials have previously raised concerns about the humanitarian and logistical costs of hosting large encampments of asylum seekers awaiting processing, a situation that intensified during earlier periods when metering was actively enforced.
Globally, the decision arrives amid continued high levels of migration pressure from Central America, Venezuela, and other regions experiencing political instability or economic hardship. Refugee and migration organizations argue that restricting legal pathways to asylum does not reduce migration pressure but instead shifts it toward irregular and more dangerous channels, potentially increasing the human cost of border enforcement without necessarily reducing total migration flows.
Domestically, the ruling fits within the administration’s broader immigration enforcement strategy, which has emphasized both increasing the deportable population within U.S. borders, as seen in the same-day TPS ruling, and limiting new entries at the border. Policy analysts describe this as a coordinated two-pronged approach designed to simultaneously shrink the existing protected immigrant population while raising barriers to future arrivals.
Implications
For the Trump administration, the ruling provides clear legal authority to formally revive metering policies at official border crossings, though it remains unclear how quickly or extensively the administration will choose to implement the practice given current relatively low rates of border crossings compared to peak years. Officials may move cautiously to avoid the kind of visible humanitarian crisis that drew criticism during previous metering periods.
For Mexican border communities and the Mexican government, renewed metering would likely require coordination on managing potentially large populations of migrants stranded on Mexican soil, raising questions about resource allocation, security, and bilateral diplomatic arrangements between Washington and Mexico City.
For asylum seekers and immigrant rights organizations, the path forward likely involves continued legal challenges on other grounds, such as international treaty obligations or specific implementation details, even though the core statutory question has now been resolved in the government’s favor. Advocacy groups are also likely to intensify efforts to document conditions faced by migrants turned back at the border, aiming to build a record for potential future legal or legislative challenges.
Sources
“Supreme Court rules asylum seekers may be turned around, siding with Trump”


