WASHINGTON — The Supreme Court on Friday allowed the Trump administration, for now, to revoke a Biden-era humanitarian program intended to give temporary residency to more than 500,000 immigrants from countries facing war and political turmoil.

The court’s order was unsigned and provided no reasoning, which is typical when the justices rule on emergency applications. It granted a request that will allow the administration to act even as an appeals court considers the case and, potentially, the justices review it again.

The ruling comes as the White House is stepping up pressure on the Department of Homeland Security to increase the pace of deportations and could speed efforts to remove thousands of migrants living legally in the United States.

The immediate practical impact of the court’s order, Justice Ketanji Brown Jackson wrote in a dissent joined by Justice Sonia Sotomayor, will have “the devastating consequences of allowing the government to precipitously upend the lives and livelihoods of nearly half a million noncitizens while their legal claims are pending.”

The ruling, which exposes some migrants from Cuba, Nicaragua, Venezuela and Haiti to possible deportation, is the latest in a series of emergency orders by the justices in recent weeks responding to a flurry of applications asking the court to weigh in on the administration’s attempts to unwind Biden-era immigration policies.

The court’s decision to side with the Trump administration, though a temporary order at an early stage in the litigation, is a signal that a majority of the justices believe the administration is likely to prevail in the case.

Jackson indicated as much in her dissent, when she wrote that the Supreme Court should have kept the lower court’s pause in place, allowing people to maintain their immigration status for now “even if the government is likely to win on the merits.” Jackson added that “success takes time” and that standards to block a lower court order “require more than anticipated victory.”

Friday’s ruling focused on former President Joe Biden’s expansion of a legal mechanism for immigration called humanitarian parole. It allows migrants from countries facing instability to enter the United States and quickly secure work authorization, provided they have a private sponsor to take responsibility for them.

This month, the justices let the Trump administration remove deportation protections from nearly 350,000 Venezuelan immigrants who had been allowed to remain in the United States under a program known as Temporary Protected Status.

In a statement, Tricia McLaughlin, a spokesperson for the Department of Homeland Security, called the Biden-era parole program “disastrous” and accused the previous administration of using it to admit “poorly vetted” migrants.

Lawyers for the immigrants said Friday’s decision would be devastating to thousands of people who had sought protection in the United States.

“The Supreme Court has effectively greenlit deportation orders for an estimated half a million people, the largest such de-legalization in the modern era,” said Karen Tumlin, founder and director of the Justice Action Center, an immigrant advocacy group.

Humanitarian parole and Temporary Protected Status are two different mechanisms by which migrants from troubled countries can be temporarily settled in the United States. Humanitarian parole is typically obtained by individuals who apply on a case-by-case basis, while protected status is more often extended to large groups of migrants for a period of time. Individuals can hold both statuses at the same time.

Between the two rulings, the justices have agreed that, for now, the Trump administration can proceed with plans to deport hundreds of thousands of people who had fled war-torn and unstable homelands and legally taken refuge in the United States.

The use of humanitarian parole has a decades-long history. It was used to admit nearly 200,000 Cubans during the 1960s and more than 350,000 Southeast Asians after the fall of Saigon during the Vietnam War.

The Biden administration announced a humanitarian parole program in April 2022 for Ukrainians seeking to flee after the Russian invasion.

Biden officials then introduced the program for Venezuelans in late 2022 and for Cubans, Haitians and Nicaraguans in January 2023. With a stalemate in Congress over immigration and a sharp rise in border crossings, the programs cleared the way for hundreds of thousands of immigrants from those nations to enter the country legally.

Biden officials had hoped that the programs would encourage immigrants to fly to the United States and apply for entry in an organized fashion, instead of traveling north by foot and crossing the border illegally.

When the program was adopted for Venezuelans, official ports of entry had been closed to migrants since the start of the coronavirus pandemic, which had provided additional incentive for those intent on reaching the country to take more dangerous routes and cross the border illegally.