White House: Rubio reserves the right to revoke green card or visa of anti-Israel activist Mahmoud Khalil

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White House press secretary Karoline Leavitt told reporters Tuesday that Secretary of State Marco Rubio reserves the right to revoke former Columbia graduate student Mahmoud Khalil's green card or visa.

Leavitt said that under the Immigration and Nationality Act, the secretary of state has the right to revoke a green card or a visa for individuals who are "adversarial to the foreign policy and national security interests of the United States of America." 

"And Mahmoud Khalil was an individual who was given the privilege of coming to this country to study at one of our nation's finest universities and colleges, and he took advantage of that opportunity, of that privilege, by siding with terrorists, Hamas terrorists, who have killed innocent men, women and children," Leavitt said at the White House press briefing. "This is an individual who organized group protests that not only disrupted college campus classes and harassed Jewish American students and made them feel unsafe on their own college campus, but also distributed pro-Hamas propaganda fliers with the logo of Hamas. That is the behavior and activity that this individual engaged in."

Leavitt said the Department of Homeland Security provided her with those fliers, which she says were distributed with the help of Khalil on the Columbia University campus and are now on her desk.

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She said she considered bringing them to the briefing but decided against it because she "didn't think it was worth the dignity of this room to bring that pro-Hamas propaganda." 

"This administration is not going to tolerate individuals having the privilege of studying in our country and then siding with pro-terrorist organizations that have killed Americans," Leavitt said. "We have a zero-tolerance policy for siding with terrorists. Period." 

A senior State Department official told Fox News that Rubio found Khalil's "presence and activities in the U.S. would have potentially serious adverse foreign policy consequences for the United States and would compromise a compelling U.S. foreign policy interest, rendering him deportable under Section 237 (a)(4)(C) of the INA [Immigration & Nationality Act]." 

The official said Section 237 of the Immigration and Nationality Act broadly contains grounds for which an alien who is in the U.S. after having been admitted or having had his or her status adjusted to that of lawful permanent resident may be removed. 

Fox News is told that Section 237 (a)(4)(C) is a rarely used provision of the law that gives the secretary of state the power to seek to deport "[a]n alien whose presence or activities in the United States the Secretary of State has reasonable ground to believe would have potentially serious adverse foreign policy consequences for the United States…"

The senior State Department official stressed this is about national security, not free speech. 

Khalil, who was a graduate student at Columbia until December, was taken into custody Saturday by Immigration and Customs Enforcement (ICE) at his university-owned apartment in New York and transported to a detention center in Louisiana. 

Khalil was born in Syria to Palestinian parents and entered the U.S. to attend Columbia in 2022. He subsequently got married to an American citizen, who is now eight months pregnant, according to the Associated Press.

New York City Mayor Eric Adams was asked at his own media availability earlier Tuesday about Khalil's "due process," but the Democrat said he wishes his own due process was considered when the Biden Justice Department brought a corruption case against him. "What I'm finding surprising is the level of support you're all displaying. But I didn't see that support for me," Adams told reporters. "Even after we saw the emails and text messages that there's a potential [that] this is politically motivated." 

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Adams told reporters, "Don't be inconsistent in your call for justice, cover those text messages." "That shows that it was potentially politically motivated," Adams said of his own case, which the Trump DOJ asked a judge to drop. "The same enthusiasm I'm getting for you, we should be enthusiastic for everyone. And again, the federal government does immigration and they're doing the investigations, and we need to make sure that it is done in a fair way. That is done." 

A federal judge in New York City on Monday blocked Khalil's deportation. A hearing is set for Wednesday to weigh motions from his lawyers claiming ICE violated his constitutional rights and asking for him to be moved back to New York. 

Trump applauded Khalil's apprehension, saying it is "the first arrest of many to come," while some Democrats are criticizing the move. "We know there are more students at Columbia and other Universities across the Country who have engaged in pro-terrorist, anti-Semitic, anti-American activity," Trump wrote on Truth Social. "We will find, apprehend, and deport these terrorist sympathizers from our country - never to return again."

Democrats on the Senate Judiciary Committee, led by Sen. Dick Durbin, D-Ill., the second-highest ranking Democrat in the chamber, called Khalil's detention "straight-up authoritarianism." 

Hundreds of protesters demonstrated in New York City on Monday night demanding Khalil's release and calling for a nationwide walkout of classes is set for noon Tuesday to protest what they deem "genocide" against the Palestinian people and the Trump administration's plan to cut federal funding to colleges that permit "illegal" protests. 

That student walkout failed to materialize as of early Tuesday afternoon, but a small group of protesters were seen on the steps of Columbia's campus chanting in favor of Khalil's release. 

The U.S. Department of Education, meanwhile, sent letters to 60 colleges and universities on Monday saying they were under investigation for alleged "antisemitic discrimination" and could lose funding. 

The Trump administration recently canceled $400 million in grant funding for Columbia. "Cutting funding to @Columbia's cancer research doesn't fight antisemitism, but it does advance Trump's fight to control higher education in the United States," House Judiciary Democrat Rep. Jerry Nadler, of New York, wrote on X. 

The Associated Press contributed to this report.