Big Win For Trump As Supreme Court Allows Govt to Block Asylum Seekers at Mexico Border

The US Supreme Court has given President Donald Trump’s administration legal room to revive “metering”, a border policy that restricts how many migrants can seek asylum each day at official crossings. The 6-3 ruling removes a lower court order that had blocked the practice, reopening a major fight over access to asylum at the US-Mexico border.

The policy is not currently in force. Border crossings are also far less crowded than during earlier periods, partly because other asylum restrictions have been imposed. Even so, the decision matters because it restores a tool previously used by both Democratic and Republican administrations, and later expanded during Trump’s first term.

What the Supreme Court decided on asylum metering

At the centre of the case was whether people stopped before entering the United States must be allowed to apply for asylum at a port of entry. Federal law says migrants who arrive in the US should have access to the asylum process and be screened if they fear persecution in their home countries.

The Trump administration argued that migrants turned away before formal entry had not legally “arrived” in the country. On that basis, government lawyers said border officers were not required to immediately accept them for asylum processing. The Supreme Court’s conservative majority agreed with that interpretation.

Justice Samuel Alito, writing for the majority, compared the situation to someone knocking at a door. “A guest does not arrive in a house when he knocks on the front door,” he wrote. The opinion also noted that metering had been used across administrations, not only under Trump.

The Department of Homeland Security welcomed the ruling but did not say whether it would restart the policy. James Percival, the agency’s general counsel, said the decision “opens up an important tool to continue securing our southern border.” The administration has described metering as a way to manage pressure at ports of entry.

Why migrant rights groups opposed the policy

Advocates for asylum seekers say metering left vulnerable people stranded in dangerous conditions in Mexican border cities. During previous use of the policy, thousands of migrants waited for days, weeks or months in informal queues near ports of entry. Many lived in makeshift shelters while hoping their names would be called.

Rights groups argued that the practice defeated the purpose of legal asylum access. Their position was that people presenting themselves at official crossings should be screened, especially if they feared persecution. They also warned that denying regular access at ports could push desperate families toward irregular and dangerous crossings.

Justice Sonia Sotomayor dissented from the bench, a step usually reserved for sharp disagreement. She said the majority’s opinion “regrettably and tragically extinguishes the light of the torch of the Statue of Liberty.” She also warned that the ruling could create a “perverse incentive” for people to enter illegally if ports of entry are blocked.

Alito responded after Sotomayor finished reading her dissent, an unusual exchange inside the court. He said he was surprised she had read it aloud and defended the majority’s reasoning by pointing to the policy’s use under more than one administration.

How metering became a major border policy

Metering began under President Barack Obama when large numbers of Haitians arrived at the San Diego-Tijuana crossing. It was later expanded under Trump’s first administration to all ports of entry along the US-Mexico border. Border officials often said processing had to be limited because holding areas had reached capacity.

Those claims became a point of dispute. Data disclosed in litigation in 2020 challenged the idea that port capacity always justified the delays. The queues also worked differently depending on location. In some places, lists were managed by Mexican officials, volunteers or migrants themselves, creating inconsistent and uncertain systems.

The human cost was central to the lawsuit. Migrants waiting in Mexico were exposed to organised crime, extreme summer heat and cold winter conditions. Many had already fled instability, persecution or violence. For families and children, the wait could mean prolonged insecurity without a clear date for formal asylum screening.

The practice effectively ended in 2020, when the US government introduced broader border restrictions during the coronavirus pandemic. President Joe Biden formally rescinded metering in 2021. That same year, a federal judge in California ruled that the policy violated asylum seekers’ rights and the legal requirement to provide screening.

A divided appeals court panel later upheld that ruling. However, nearly half the judges on the full San Francisco-based appeals court voted to rehear the case. That division signalled the legal importance of the dispute and helped set the stage for Supreme Court review.

What changes after the ruling

The ruling does not automatically restart metering. It gives the administration authority to consider using it again, subject to how the policy is implemented and any future legal challenges. For now, official figures show fewer migrants being encountered at southwest ports of entry than during the peak months of 2024.

In May, the government reported an average of 114 immigrants encountered by customs officers each day along southwest ports of entry. In May 2024, daily numbers reached a high of 1,703. That sharp fall means the immediate operational pressure is different from the period when metering was most visible.

The decision also comes as the Supreme Court handles several immigration cases linked to Trump’s second administration, including a dispute over birthright citizenship. On the same day, the court also allowed the administration to end deportation protection for some migrants fleeing instability and armed conflict.

Democracy Forward, which helped bring the metering case, criticised the ruling. Its president and CEO, Skye Perryman, said the group was disappointed and urged Americans to demand protection for families “the Court today decided to keep in harm’s way.” Al Otro Lado, another group involved, warned of harder borders for vulnerable people.

Under US law, asylum can protect people who prove a well-founded fear of persecution because of race, religion, nationality, political opinion or membership in a particular social group. Those granted asylum cannot be deported on those grounds, may work legally, and can later seek permanent residence and citizenship.

The Supreme Court’s ruling leaves the future of metering in the administration’s hands. If revived, it could reshape how asylum seekers approach official border crossings. If left unused, the decision will still stand as a significant shift in how the court reads arrival and access under US asylum law.