Judge Blocks Trump Order on Refugees Amid Chaos and Outcry Worldwide

A federal judge in Brooklyn came to the aid of scores of refugees and others who were trapped at airports across the United States on Saturday after an executive order signed by President Trump, which sought to keep many foreigners from entering the country, led to chaotic scenes across the globe, the New York Times reported.

The judge’s ruling blocked part of the president’s actions, preventing the government from deporting some arrivals who found themselves ensnared by the presidential order. But it stopped short of letting them into the country or issuing a broader ruling on the constitutionality of Mr. Trump’s actions.

The high-stakes legal case played out on Saturday amid global turmoil, as the executive order signed by the president slammed shut the borders of the United States for an Iranian scientist headed to a lab in Massachusetts, a Syrian refugee family headed to a new life in Ohio and countless others across the world.

The president’s order, enacted with the stroke of a pen at 4:42 p.m. Friday, suspended entry of all refugees to the United States for 120 days, barred Syrian refugees indefinitely, and blocked entry into the United States for 90 days for citizens of seven predominantly Muslim countries: Iran, Iraq, Libya, Somalia, Sudan, Syria and Yemen.

The Department of Homeland Security said that the order also barred green card holders from those countries from re-entering the United States. In a briefing for reporters, White House officials said that green card holders from the seven affected countries who are outside the United States would need a case-by-case waiver to return.

Mr. Trump — in office just a week — found himself accused of constitutional and legal overreach by two Iraqi immigrants, defended by the American Civil Liberties Union. Meanwhile, large crowds of protesters turned out at airports around the country to denounce Mr. Trump’s ban on the entry of refugees and people from seven predominantly Muslim countries.

Lawyers who sued the government to block the White House order said the judge’s decision could affect an estimated 100 to 200 people who were detained upon arrival at American airports.

Judge Ann M. Donnelly of Federal District Court in Brooklyn, who was nominated by former President Barack Obama, ruled just before 9 p.m. that implementing Mr. Trump’s order by sending the travelers home could cause them “irreparable harm.” She said the government was “enjoined and restrained from, in any manner and by any means, removing individuals” who had arrived in the United States with valid visas or refugee status.

The ruling does not appear to force the administration to let in people otherwise blocked by Mr. Trump’s order who have not yet traveled to the United States.

The judge’s one-page ruling came swiftly after lawyers for the A.C.L.U. testified in her courtroom that one of the people detained at an airport was being put on a plane to be deported back to Syria at that very moment. A government lawyer, Gisela A. Westwater, who spoke to the court by phone from Washington, said she simply did not know.

Hundreds of people waited outside of the courthouse chanting, “Set them free!” as lawyers made their case. When the crowd learned that Judge Donnelly had ruled in favor of the plaintiffs, a rousing cheer went up in the crowd.

Minutes after the judge’s ruling in New York City, another judge, Leonie M. Brinkema of Federal District Court in Virginia, issued a temporary restraining order for a week to block the removal of any green card holders being detained at Dulles International Airport.

Around the nation, security personnel at major international airports had new rules to follow, though the application of the order appeared chaotic and uneven. Humanitarian organizations delivered the bad news to overseas families that had overcome the bureaucratic hurdles previously in place and were set to travel. And refugees already on flights when the order was signed on Friday found themselves detained upon arrival.

“We’ve gotten reports of people being detained all over the country,” said Becca Heller, the director of the International Refugee Assistance Project. “They’re literally pouring in by the minute.”

Earlier in the day, at the White House, Mr. Trump shrugged off the sense of anxiety and disarray, suggesting that there had been an orderly rollout. “It’s not a Muslim ban, but we were totally prepared,” he said. “It’s working out very nicely. You see it at the airports, you see it all over.”

But to many, the government hardly seemed prepared for the upheaval that Mr. Trump’s actions put into motion.

There were numerous reports of students attending American universities who were blocked from returning to the United States from visits abroad. One student said in a Twitter post that he would be unable to study at Yale. Another who attends the Massachusetts Institute of Technology was refused permission to board a plane. A Sudanese graduate student at Stanford University was blocked for hours from entering the country.

Human rights groups reported that legal permanent residents of the United States who hold green cards were being stopped in foreign airports as they sought to return from funerals, vacations or study abroad. There was widespread condemnation of the order, from religious leaders, business executives, academics, political leaders and others. Mr. Trump’s supporters offered praise, calling it a necessary step on behalf of the nation’s security.

A crowd gathers during an anti-Donald Trump immigration ban protest outside Terminal 4 at John F. Kennedy International Airport in Queens, New York, U.S. January 28, 201