Liberal Jewish groups have condemned the arrest of Mahmoud Khalil, the anti-Israel protest leader at Columbia University who was detained by US Immigration and Customs Enforcement and threatened with deportation. The arrest has sparked a cascade of condemnation and protest from Democratic politicians and progressive groups. Multiple progressive Jewish groups that supported or defended the protests at Columbia have condemned Khalil's arrest as an authoritarian action. Liberal Jewish organizations that previously criticized protests at Columbia, or that have expressed concern about antisemitism at anti-Israel protests, have also expressed alarm over the arrest.