CBS Evening News with Norah O'Donnell, 12/07/23

A deadly shooting on a college campus in Las Vegas as we learn more about the victims and police say the gunman had recently been denied a job at the university, it was university police who confronted the shooter. Congress opens an investigation into Harvard, Penn, and MIT after their presidents testified about anti-Semitism on campus. Migrant crossings reach near record levels in America's border crisis.