US Rep. Rashida Tlaib (D-MI) addresses attendees as she takes part in a protest calling for a ceasefire in Gaza outside the US Capitol, in Washington, DC, US, Oct. 18, 2023. Photo: REUTERS/Leah Millis

Democrats in the US Congress are largely defending a leading anti-Israel agitator at Columbia University in New York following news of his arrest and detainment by US Immigration and Customs Enforcement (ICE).

Mahmoud Khalil, a Palestinian from Syria who completed post-graduate studies at Columbia in December, was apprehended by federal authorities on Saturday night and transported to an immigration jail in Louisiana. The pro-Hamas activist was informed that his green card had been revoked and that he would be deported from the United States.

In a statement, the US Department of Homeland Security said ICE agents arrested Khalil “in support of” an executive order signed by US President Donald Trump aimed at combating antisemitism on university campuses.

“Khalil led activities aligned to Hamas, a designated terrorist organization. ICE and the Department of State are committed to enforcing President Trump’s executive orders and to protecting US national security,” the department said.

US President Donald Trump defended Khalil’s arrest and said it will be the first of many.

“We know there are more students at Columbia and other universities across the country who have engaged in pro-terrorist, antisemitism, anti-American activity, and the Trump administration will not tolerate it,” Trump said in a post on Truth Social. “Many are not students; they are paid agitators. We will find, apprehend, and deport these terrorist sympathizers from our country — never to return again.”

However, a federal judge in New York City on Monday ordered that Khalil not be deported by the Trump administration until the court ruled on a lawsuit presented by his lawyers. According to ICE, the activist is currently being held at the Lasalle Detention facility in Louisiana. Khalil’s case is set to be heard on Wednesday. 

Many observers criticized Khalil’s arrest and detainment, arguing that the Trump administration both violated his right to due process and undermined free speech. Critics also argued that the Trump administration does not possess the right to unilaterally revoke green cards from legal residents. 

Congressional Democrats largely condemned the ICE arrest of Khalil, arguing that the Trump administration should release the pro-Hamas activist immediately. 

“The warrantless arrest of any legal permanent resident seemingly solely over their speech is a chilling, McCarthyesque action in response to the exercise of first amendment rights to free speech,” said Rep. Jerry Nadler (D-NY). 

Sen. Dick Durbin (D-IL), ranking member of the Senate Judiciary Committee, lambasted the arrest, posting on social media that detaining a legal resident “for exercising his right to free speech is something we’d expect from Russia — NOT AMERICA [sic].”

The official BlueSky account of the Democrats on the Senate Judiciary Committee accused the Trump administration of seeking retribution against Khalil for expressing “his First Amendment rights in a way Donald Trump didn’t like” and condemned the White House for practicing “straight up authoritarianism.”

Rep. Rashida Tlaib (D-MI), one of the most outspoken critics against Israel in Congress, said that Khalil’s arrest is part of a broader effort “to shred our constitutional rights to free speech and due process.” In addition, Tlaib spearheaded a letter to US Secretary of Homeland Security Kristi Noem, demanding that Khalil be “freed from DHS custody immediately.” Thirteen other Democrats signed the letter. 

The letter argued that Khalil has “not been charged or convicted of any crime” and that the Trump administration targeted him “solely for his activism and organizing as a student leader,” as well as his efforts in opposing Israel’s “brutal assault of the Palestinian people in Gaza.” The missive also claimed that the arrest of Khalil represents another example of the Trump administration’s purported “anti-Palestinian racism” and accused the White House of trying to dismantle the “Palestine solidarity movement in this country.” The lawmakers warned that the Trump administration’s tactics against Khalil “will be applied to any and all opposition to his undemocratic agenda.”

Some observers noted out that Rep. Alexandria Ocasio-Cortez (D-NY), one of the most vocal opponents of the Jewish state in the US Congress, did not sign onto the letter calling for Khalil’s release. Though Ocasio-Cortez has spoken out in defense of Khalil, some on the political left have repudiated her for not taking more strident anti-Israel stances in the 16 months following Hamas’s Oct. 7, 2023, invasion of Israel. The lawmaker came under fire by some of the political left last summer for calling for the release of the Israeli hostages kidnapped by Hamas to Gaza.

Sen. Peter Welch (D-VT) also repudiated the arrest, writing that Khalil is “entitled to First Amendment protections like everyone in this country.”

Despite the widespread backlash over Khalil’s arrest, many congressional Republicans praised the announcement, arguing that the Trump administration has taken aggressive action to protect Jewish Americans and clamp down on antisemitism. 

While at Columbia, Khalil spearheaded multiple pro-Hamas demonstrations on campus. He was a participant in Columbia University Apartheid Divest (CUAD), a constellation of 100 anti-Israel campus organizations calling for the Ivy League institution to cut ties with the Jewish state. 

In the aftermath of Khalil’s arrest, video circulated online showing the activist leading a takeover of a campus building at neighboring Barnard College. During the unsanctioned demonstration, activists spread pamphlets glorifying the Hamas Oct. 7 massacres across southern Israel. 

In addition, Khalil helped lead the infamous Hamilton Hall takeover on Columbia’s campus in the final weeks of the 2023-2024 school year.

US Speaker of the House Rep. Mike Johnson (R-LA) defended Khalil’s arrest, saying, “If you are on a student visa and you’re an aspiring young terrorist who wants to prey upon your Jewish classmates, you’re going home.” 

Sen. Tom Cotton (R-AK) condemned Democrats for “fighting for a pro-Hamas foreigner who has made life hell for Jews on campus.”

Sen. Markwayne Mullin (R-OK) also lauded the detainment of Khalil, writing that “obtaining a US visa is a privilege, not a right. Friends of Hamas — don’t let the door hit you on the way out.”

In the year following the Hamas-led Oct. 7 slaughters across Israel, Columbia University has emerged as a hotbed of anti-Israel student activism. Last spring, anti-Israel students and faculty erected a student encampment, protesting the university’s ties to the Jewish state. Moreover, Columbia has suffered an exodus of financial support from Jewish donors and alumni, alleging that the university has dragged its feet in combating antisemitism on campus. 

Last week, the Trump administration cut $400 million in grants originally intended for Columbia, arguing that the university has not done enough to protect Jewish students. Mounting pressure from the Trump administration reportedly caused the university to collaborate with ICE to detain Khalil.