Mehmet Oz, the former host of "The Dr. Oz Show," poses atop his new star on the Hollywood Walk of Fame during a ceremony on Feb. 11, 2022, in Los Angeles. Oz may have made his reputation as a surgeon. But he made a fortune as a salesman on daytime TV. Now he is trying to leverage his celebrity as the Republican candidate in a bitterly contested U.S. Senate race in Pennsylvania. (AP Photo/Chris Pizzello, File)