In a new book, Sen. John McCain (R-AZ) writes that his battle with brain cancer has given him a sense of liberation to vote and speak his mind. “This is my last term,” McCain writes in his upcoming book The Restless Wave, which he co-authored with former adviser Mark Salter. An excerpt of the book was posted Monday on Apple News. “If I hadn’t admitted that to myself before this summer, a stage 4 cancer diagnosis acts as ungentle persuasion,” McCain continues. “I’m freer than colleagues who will face the voters again. I can speak my mind without fearing the...