Since President Donald Trump took office, the U.S. government has used its immigration enforcement powers to crack down on international students and scholars at several American universities who had participated in pro-Palestinian demonstrations or criticized Israel over its military action in Gaza. Trump and other officials have accused protesters and others of being “pro-Hamas,” referring to the Palestinian militant group that attacked Israel on Oct. 7, 2023. Many protesters have said they were speaking out against Israel's actions in the war. Trump’s administration has cited a seldom-invoked statute authorizing the secretary of state to expel non-citizens from the country if their presence was a threat to U.S. foreign policy interests. Some people been taken into custody or deported. Others fled the U.S. after learning their visas had been revoked. Rumeysa Ozturk Federal officers detained 30-year-old Turkish student Rumeysa Ozturk on Tuesday as she walked along a street in suburban Boston. A senior Department of Homeland Security spokesperson said without providing evidence that an investigation found Ozturk, a doctoral student at Tufts University, “engaged in activities in support of Hamas," which is also a U.S.-designated terrorist group. Friends and colleagues of Ozturk said her only known activism was co-authoring an op-ed in a student newspaper that called on Tufts University to engage with student demands to cut ties with Israel. Ozturk has been taken to an ICE detention center in Louisiana. A U.S. District judge in Massachusetts on Friday said Ozturk can’t be deported to Turkey without a court order and gave the government until Tuesday evening to respond to an updated complaint filed by Ozturk’s attorneys. Mahmoud Khalil This month, immigration enforcement agents arrested and detained Mahmoud Khalil, a legal U.S. resident, Palestinian activist and graduate student who was prominent in protests at Columbia last year. The administration has said it revoked Khalil’s green card because his role in the campus protests amounted to antisemitic support for Hamas. He is fighting deportation. Khalil served as a negotiator for Columbia students as they bargained with university officials over ending their campus encampment last spring. He was born in Syria and is married to an American citizen. His lawyers have asked a federal judge to free their client from a Louisiana immigration detention center. That legal challenge is still pending. Yunseo Chung Yunseo Chung is a Columbia student and lawful U.S. resident who moved to America from Korea as a child. Chung attended and was arrested at a sit-in this month at nearby Barnard College protesting the expulsion of students who participated in pro-Palestinian activism. The Department of Homeland Security wants to deport Chung and has said she “engaged in concerning conduct,” including being arrested on a misdemeanor charge. A judge ordered immigration agents not to detain Chung while her legal challenge is pending. Badar Khan Suri Badar Khan Suri, a Georgetown scholar from India, was arrested outside his Virginia home and detained by masked Homeland Security agents on allegations that he spread Hamas propaganda. Suri’s attorney wrote in a court filing that he was targeted because of his social media posts and his wife’s “identity as a Palestinian and her constitutionally protected speech.” Suri holds a visa authorizing him to be in the U.S. as a visiting scholar, and his wife is a U.S. citizen, according to court documents. Suri was taken to a detention facility in Louisiana, according to a government website. His lawyers are seeking his immediate release and to halt deportation proceedings. Leqaa Kordia Leqaa Kordia, a resident of Newark, New Jersey, was detained and accused of failing to leave the U.S. after her student visa expired. Federal authorities said Kordia is a Palestinian from the West Bank and that she was arrested at or near Columbia during pro-Palestinian protests. Columbia has said it has no record of her being a student there. Kordia is being held in an immigration detention center in Alvarado, Texas, according to a government database. Ranjani Srinivasan Ranjani Srinivasan, an Indian citizen and doctoral student at Columbia, fled the U.S. after immigration agents searched for her at her university residence. The Trump administration has said it revoked Srinivasan's visa for “advocating for violence and terrorism.” Srinivasan opted to “self-deport.” Officials didn’t say what evidence they have that Srinivasan advocated violence. Her lawyers deny the accusations, and she told The New York Times that she didn't help to organize protests at Columbia. ...