@cbsnews: Joe Biden announced on Sunday that he would be scaling back the tour for his new memoir, "Promise Me, America," amid ongoing cancer treatment. “Some days are better than others. It hasn't stopped me. But sometimes it slows me down,” the former president wrote in a post on X. He added that he would be unable to hold as many book discussions as he had hoped, but remained optimistic that the memoir would “speak for itself.” Biden revealed his cancer diagnosis in May 2025, less than four months after leaving the White House. #biden #joebiden #cancer