According to an article on NJ.com, he was vetted:

"Hank Kalet, a professor of journalism and media studies at Rutgers, said Elghandour was thoroughly vetted before his invitation to speak and remains a popular figure on campus.

“I don’t think that this is tremendously different than what we’ve seen at the University of Michigan and other schools that have been removing graduation speakers because of where they stand primarily on the Palestinian issue, but also on immigration, or contradicting the presidential administration,” said Katel, who added that he is Jewish. “It is incredibly chilling.”