WASHINGTON US Sen. Peter Welch demanded the release of a Palestinian student from Columbia University who was arrested last week during a citizenship interview. "I just met with Mohsen Mahdawi where he’s being held in Vermont. He was detained when he showed up for his citizenship interview. "He should be released so he can become a citizen," Welch said Monday on X. Mahdawi, a legal permanent resident and former student protest organizer at Columbia, was taken into custody at the US Citizenship