The U.S. Senate battle between Republican Dr. Mehmet Oz and Democrat John Fetterman is heating up with a parody from the Simpsons TV show. In an ad released Monday, the Fetterman campaign spliced together pieces of Dr. Oz’s TV show with a cartoon character known for his snake oil-pitches about medical cures. Dr. Oz had faced lawsuits in the past for some of the products he endorsed. Disney, which controls rights to the Simpsons, has not yet issued a cease-and-desist order to the Fetterman campaign.