A second person who took part in pro-Palestinian protests at Columbia University has been arrested by U.S. immigration agents, after overstaying a student visa, federal officials said on Friday, the latest turn in the crisis engulfing the Ivy League institution.

The person, identified by the authorities as Leqaa Kordia, is Palestinian and from the West Bank. She was arrested in Newark on Thursday, officials said. Her student visa was terminated in January 2022, and she was arrested by the New York City police last April for her role in a campus demonstration, the Homeland Security Department said in a statement.

The agency also released a video on Friday that it said showed a Columbia student, identified as Ranjani Srinivasan, preparing to enter Canada after her student visa was revoked.

The announcements, by Kristi Noem, the homeland security secretary, reflected an escalation of the Trump administration’s focus on Columbia, where protests over the war in Gaza last year ignited a national debate over free speech and antisemitism, and prompted similar demonstrations at dozens of other campuses.

The actions came during a tumultuous week at the university, which has experienced a series of escalating controversies since the arrest by federal immigration agents last weekend of Mahmoud Khalil, a recent Columbia graduate and prominent figure in pro-Palestinian campus demonstrations.

On Friday, more than 200 students gathered outside Columbia’s main campus gates to protest the university’s handling of Mr. Khalil’s arrest. Demonstrators wore kaffiyehs, waved Palestinian flags and carried banners with slogans like “Free Mahmoud,” “I.C.E. off our campuses” and “Columbia You Can’t Hide.”

The protest unfolded less than 24 hours after homeland security agents entered the campus with federal warrants and searched two dorm rooms. No one was detained and nothing was taken, according to the university’s interim president, Katrina Armstrong.

Social media posts by Ms. Noem on Friday appeared to signal that Columbia continued to be a subject of Trump administration scrutiny.

Ms. Noem posted a video on the social media platform X that appeared to show a woman walking through LaGuardia Airport with a small suitcase. Ms. Noem identified the woman as Ms. Srinivasan and said she had used a U.S. Customs and Border Protection app to notify the government of her intention to self-deport. Ms. Srinivasan’s dorm room was one of those searched, according to her lawyer and roommate.

“It is a privilege to be granted a visa to live and study in the United States of America,” Ms. Noem said in a statement.

Nathan Yaffe, a member of Ms. Srinivasan’s legal team, confirmed in a statement that federal agents had entered her dorm room on Thursday in an effort to detain her or seek information about her whereabouts. A lawyer for Ms. Kordia could not be immediately identified.

The past week has been fraught with crisis on Columbia’s Morningside Heights campus. The Trump administration demanded on Thursday that the university make far-reaching changes to its student discipline and admissions policies before any negotiations regarding the cancellation of $400 million in government grants and contracts could begin.

Federal officials wrote in a letter that the university had a week to formalize its definition of antisemitism, ban the wearing of masks “intended to conceal identity or intimidate” and put the Middle Eastern, South Asian and African Studies Department under “academic receivership.”

The government said the moves were necessary because of what they described as Columbia’s failure to protect Jewish students from harassment. Officials from three government agencies wrote that Columbia “has fundamentally failed to protect American students and faculty from antisemitic violence and harassment.”

Todd Blanche, the deputy attorney general, said during a speech at the Justice Department on Friday that the administration was investigating whether incidents on campus have violated civil rights protections or federal terrorism laws.

“This is long overdue,” Mr. Blanche said.

But civil liberties advocates argued that the government’s demands would not only erode free speech and academic freedom at Columbia but would have a chilling effect on universities across the country. Jameel Jaffer, director of the Knight First Amendment Institute at Columbia, said in a statement that the “subjugation of universities to official power is a hallmark of autocracy.”

Others were particularly concerned by the demand that the university adopt a definition of antisemitism that could penalize those who are critical of Israel.

Tyler Coward, the lead counsel for government affairs at the free speech and legal defense group Foundation for Individual Rights and Expression, called the letter “a blueprint to supercharge censorship at America’s colleges and universities.”

“Colleges across the country are likely reading this letter this morning and thinking they better censor speech — or they’re next,” Mr. Coward said in a statement.

A university spokeswoman said Thursday evening that Columbia was “reviewing the letter” from the government agencies. “We are committed at all times to advancing our mission, supporting our students, and addressing all forms of discrimination and hatred on our campus,” she said.

After the dorm search, Ms. Armstrong said in a note to students and staff members late Thursday that she was “heartbroken” over the development, and that Columbia was making every effort to ensure the safety of its students, faculty and staff.

In a separate action on Thursday, Columbia announced a range of disciplinary actions against students who occupied a campus building last spring, including expulsions and suspensions, among the steps that Trump administration officials had called for in their letter.

The punishments included “multiyear suspensions, temporary degree revocations and expulsions,” the university said in a statement. It was unclear how many students had been punished.

Among those expelled was Grant Miner, a Jewish graduate student who was part of a student coalition that has called for Columbia to divest from companies connected to Israel, according to the student workers’ union at the university, which Mr. Miner leads.

The union has accused the university of targeting its members. A Columbia spokeswoman said Friday evening that it was “unfortunate” that the group was trying to “conflate student discipline with employment matters,” and that the accusation was false.

Mr. Miner, a doctoral student in the English and comparative literature department, said in a statement that “this is an egregious attempt to break the union and squash the movement against genocide in Palestine.”

“We will not be intimidated on either front,” he said.

Anvee Bhutani, Luis Ferré-Sadurní, Hamed Aleaziz, Sharla Steinman and Katherine Rosman contributed reporting.

Anne Kaufman Schneider, who shepherded the plays of her father, George S. Kaufman, a titan of 20th-century American theatrical wit, into the 21st century with an acerbic sagacity all her own, died on Thursday at her home in Manhattan. She was 99.

Her executor, Laurence Maslon, confirmed the death.

“Headstrong girls are difficult,” Ms. Kaufman Schneider once told The New York Times, “but that was the source of my good relationship with my father. And it started early. Because there wasn’t any baby talk. We went to the theater together starting when I was 4. Now I have made his work my agenda in life.”

George Kaufman’s stellar career as a hit-making playwright and stage director included two Pulitzer Prizes — one, in 1937, for “You Can’t Take It With You,” a comedy he created with his most constant collaborator, Moss Hart; the other, in 1932, for “Of Thee I Sing,” a satirical political musical he wrote with Morrie Ryskind to a score by George and Ira Gershwin.

Even so, after his death in 1961 at the age of 71, Kaufman was a hard sell for theatrical revivals.

“Very little happened at all,” Ms. Kaufman Schneider later recalled, “until Ellis Rabb revived ‘You Can’t Take It With You’ for the A.P.A./Phoenix Theater in 1965. Ellis proved that these are classic American plays.” (Founded by Mr. Rabb, an actor and director, the A.P.A., formally the Association of Producing Artists, was a Broadway entity notable for mounting revivals after it merged with the Phoenix Theater, another Broadway house.)

Ms. Kaufman Schneider proceeded to oversee her father’s renaissance over the next 50-plus years — a term of service that outdistanced his own living stewardship of his career.

She encouraged countless regional theater productions and helped steer two of them to Broadway: Mr. Rabb’s “You Can’t Take It With You,” which originated in Ann Arbor, Mich., and a revival of Kaufman and Edna Ferber’s “The Royal Family,” which was first presented at the McCarter Theater in Princeton, N.J., and reached Broadway in December 1975.

She also helped nurture a “Kaufmania” festival at Arena Stage in Washington, D.C., for her father’s centennial in 1989 and a major Lincoln Center revival of Kaufman and Ferber’s “Dinner at Eight” in 2002.

“The wisecracking woman who is smarter than all the men” was how Ms. Kaufman Schneider defined a classic Kaufman heroine. “Which in some ways is what I modeled myself after — I hope unconsciously. That’s the kind of woman he admired.”

She was born on June 23, 1925, and adopted three months later by Kaufman, then the drama editor of The New York Times, and his wife, Beatrice (Bakrow) Kaufman, who was known as Bea, a literary figure in her own right as an editor and tastemaker.

Kaufman had begun writing plays on the side in 1918, almost always with collaborators, particularly Marc Connelly, another future Pulitzer winner, who scripted five Broadway comedies with him in four years, including “Merton of the Movies” in 1922 and “Beggar on Horseback” in 1924. (Kaufman wrote only one play solo,: “The Butter and Egg Man,” which was also a hit, in 1925.)

A notoriously aloof germaphobe who washed his hands after any contact with another human being, Kaufman was hardly a likely candidate for fatherhood. His marriage to the conversely gregarious and vigorously social Bea Kaufman had become a loving but chaste one after she suffered an early miscarriage; both openly pursued extramarital affairs.

Into this odd family ménage entered Anne, who grew up at a remove from her parents, attentively raised instead by a succession of foreign-born governesses, nannies and maids, as biographies of Kaufman and interviews with Ms. Kaufman Schneider have attested.

Her mother called her Button and her father called her Poke, an eliding of “slow poke.” Her most regular family contact with them was in stagy “good nights” at their celebrity-studded dinner parties. Little Anne discovered that sharp exit quips made her father laugh with paternal pride.

On Sundays, the help’s day off, her mother handed her over to her father with an admonition: Do something with her. On his own, Kaufman mainly did two things, make theater and play cards, and he excelled at both. He took his daughter to his bridge club, where she stoically looked on, developing what would be a lifelong aversion to card games. He would also take her to the theater, where their deepest bond was born.

Anne attended five prestigious private schools in succession: Walden, Lincoln, Todhunter and Dalton in Manhattan and Holmquist in Pennsylvania, near the family’s country house. She largely grew up in a small apartment adjacent to their palatial home at 200 West 58th Street in Manhattan; her parents had acquired it just for her upbringing. She later lived with them in a series of elegant East Side addresses.

Admitted to the University of Chicago in 1943 at 18, she instead married a young New York Times reporter named John Booth. When, during World War II, he was shipped overseas as a soldier six months later, she moved back home with her parents; when Mr. Booth returned from military duty, she divorced him. She married Bruce Colen, a magazine editor, in 1947 and had a daughter, Beatrice, with him the next year before divorcing him, too.

In 1960, she married Irving Schneider, the general manager for the theatrical producer Irene Mayer Selznick. He had been an assistant stage manager on the original 1934 production of Kaufman and Hart’s play “Merrily We Roll Along” (later adapted by Stephen Sondheim as a musical). That marriage lasted until Mr. Schneider’s death in 1997.

After bonding with the stage actress Eva Le Gallienne during her starring run in the 1975 revival of “The Royal Family,” Ms. Kaufman Schneider became her devoted friend and constant companion until Ms. Le Gallienne’s death in 1991 at age 92.

Ms. Kaufman Schneider’s daughter, Beatrice Colen Cronin, died in 1999. Two grandsons survive.

Of all her father’s many collaborators — including Edna Ferber, Ring Lardner and John P. Marquand — Moss Hart was his favorite, Ms. Kaufman Schneider said. “I think they were very much mentor and apprentice, even father and son,” she said in a 1998 interview with The Times.

Ms. Kaufman Schneider first met Mr. Hart’s future wife, the singer, actress and later arts administrator Kitty Carlisle, on the set of the Marx Brothers movie “A Night at the Opera” (1935); Ms. Carlisle was co-starring in the film, which George Kaufman had co-written. The two women reconnected when Ms. Carlisle married Mr. Hart in 1946, becoming, in Ms. Kaufman Schneider’s words, “inseparable,” particularly after the deaths of both men in 1961.

Their friendship grew into something of a road show in their later years, as they teamed up for speaking engagements all over the world on the subject of Kaufman and Hart.

“Just two girls with six names,” Ms. Kaufman Schneider liked to say.

“I am very grateful to Anne,” Ms. Carlisle Hart once told The Times. “Anne has taken on the major burden of the plays, their second life.”

In 2004, due in no small measure to his daughter’s restorative efforts, George S. Kaufman formally entered the theatrical pantheon with the Library of America’s publication of “Kaufman & Co.,” a collection of nine of his collaborative comic masterworks.

Still, “for Anne, in the end, nothing made her happier than seeing her father’s plays in front of audiences,” said her executor, Mr. Maslon, an N.Y.U. arts professor and theater scholar who edited “Kaufman & Co.” and who, with the actor David Pittu, is an executor of the George S. Kaufman Literary Trust. “‘Get ’em up!’ was Anne’s watch cry.”

Preserving her father’s plays also allowed Ms. Kaufman Schneider to preserve the love that they each had sometimes found hard to express.

“Well, sir, here we are again,” she wrote on Kaufman’s 51st birthday, when she was nearly 16. “Every year at this time I want to write you a really nice letter and every year I’m just as much at a loss as I was the year before. In between times I can make up gobs of them — I remember things we do together; funny things you say; but those aren’t reasons for writing people birthday letters — those are just a few reasons for liking you. Others are hard to say — hard even to define in thinking terms to oneself.”

Senator Chuck Schumer of New York, the minority leader, is facing a torrent of criticism for choosing to vote with his Republican counterparts to head off a government shutdown.

Some of the sharpest barbs have come from another New York Democrat, Representative Alexandria Ocasio-Cortez.

Ms. Ocasio-Cortez blasted Mr. Schumer’s efforts to gather enough Democratic support so Republicans can clear a procedural hurdle and pass a measure to fund the government through Sept. 30, accusing him of ceding the sliver of power Democrats had over President Trump.

“I believe that’s a tremendous mistake,” she said in a CNN interview on Thursday.

And she had specific criticism of the legislation itself. “This turns the federal government into a slush fund for Donald Trump and Elon Musk,” she said. “It sacrifices congressional authority, and it is deeply partisan.”

Her sharp remarks even stirred talk about whether she would consider challenging Mr. Schumer, 74, in a primary when he is up for re-election in 2028. Asked directly in the television interview if she would consider such a campaign, she sidestepped the question but did not shoot down the premise.

The House Democratic leadership — with yet another New York legislator at the top — quickly followed Ms. Ocasio-Cortez’s criticism, putting out a statement knocking Mr. Schumer’s caucus for going along with Republicans. All but one House Democrat voted Tuesday against the plan, which would slightly decrease spending overall.

“The far-right Republican funding bill will unleash havoc on everyday Americans, giving Donald Trump and Elon Musk even more power to continue dismantling the federal government,” Representative Hakeem Jeffries of New York, the top House Democrat, said in a joint statement with the rest of his leadership team.

“House Democrats will not be complicit,” they said.

Their anger, with Ms. Ocasio-Cortez out front, reflects a boiling over of resentments among some Democrats about the gerontocracy leading their party. The older generation led them astray last year during the presidential election, many younger Democrats say, and it is hurting them again as they try to stand up to Mr. Trump.

Angered House Democrats were already discussing primary challenges to Mr. Schumer, who was first elected in 1998.

“Schumer has been in politics for a long time, and I would hope that this is his final term, and he opens it up for someone new,” said State Senator Jabari Brisport of New York, an ideological ally of Ms. Ocasio-Cortez, who endorsed him when he first ran.

Mr. Brisport said that he did not know if Ms. Ocasio-Cortez aspired to higher office. But if she ran, he said, “she would make a fantastic senator.”

Mr. Schumer’s defenders note that it was easier for House Democrats to vote no — because the Republicans in their chamber had enough support to pass the legislation to keep the government open without Democratic help.

And, his defenders say, allowing the government to shut down would only make matters worse.

It “may feel good giving vent to our frustration,” Jay Jacobs, the New York Democratic Party chair, said in a statement. But it “will work against our long-term desire to win back the Congress in 2026 and the presidency in 2028.”

In television interviews, floor speeches and a New York Times opinion piece, Mr. Schumer defended his choice, saying that he hated the bill before him but that its passage was better than a shutdown.

“The risk of allowing the president to take even more power via a government shutdown is a much worse path,” Mr. Schumer wrote in The Times.

His efforts drew praise from perhaps an unwelcome source: the president himself.

“Congratulations to Chuck Schumer for doing the right thing — Took ‘guts’ and courage!” Mr. Trump said on social media.