Since March 8, Mahmoud Khalil — a 30-year-old Columbia University student — has been held in a federal detention center in Louisiana for, Trump Administration officials allege, expressing sympathy to the terrorist group Hamas during protests on the campus. Khalil, who was born in Syria to Palestinian parents, is a legal resident of the United States and is not accused of any acts of violence. And his wife is a U.S. citizen. But Khalil is at risk for deportation, and critics of the Trump Administration and U.S. Attorney General Pam Bondi are arguing that his detention is an example of thought policing — not an action based on legitimate national security concerns.Two of those critics are attorneys Thomas Anthony Durkin and Bernard Harcourt (a law professor at Columbia University in New York City). READ MORE: Sabotaging Social Security: Behind the leaked memo to cut agency staff and critical servicesIn an op-ed published by The Guardian on March 21, Durkin and Harcourt argue that the movement to deport students for saying controversial things recalls the late Sen. Joseph McCarthy’s (R-Wisconsin) witch hunt of the 1950s.”The legal risks are real,” Durkin and Harcourt warn. “They are perilous, and they are alarming. Where a designated foreign terrorist organization (FTO) — such as Hamas, the Popular Front for the Liberation of Palestine, or related organizations such as the Samidoun Palestinian Prisoner Solidarity Network — is concerned, the line separating political advocacy from material support to terrorism can be razor thin, and any doubt tends to be resolved against those engaged in the political advocacy. FTOs are foreign organizations that the Bureau of Counterterrorism in the U.S. State Department designates as terrorist entities under Section 219 of the Immigration and Nationality Act.”The legal scholars add, “Once such a designation is made, it becomes unlawful for a U.S. person to knowingly provide that group with ‘material support or resources.'”According to Durkin and Harcourt, the “questionable legal strategy” being used against Khalil and other student protesters raises major civil liberties concerns.READ MORE: ‘Clear and present danger’: Experts alarmed at ‘insanity’ of Musk getting secret war plans”Legal jeopardy for political advocacy has long existed in this country despite its storied embrace of the First Amendment,” the attorneys explain. “But the Justice Department’s new taskforce and threatened anti-terrorist prosecutions reach deeper into policing political dissent than anything seen since the McCarthy era. The consequences could be far more draconian than the usual campus risk of a misdemeanor civil-disobedience arrest or student discipline. The threat to the values of free speech and open debate on college campuses could hardly be more consequential.”READ MORE: Trump official urging Fox viewers to buy Tesla stock decried as ‘abuse of power’Thomas Anthony Durkin and Bernard Harcourt’s full op-ed for The Guardian is available at this link.