'I Hate to Leave.' John McCain Opens Up About Brain Cancer Diagnosis

Republican Sen. John McCain said that his brain cancer diagnosis served as "ungentle persuasion" to recognize his current term in the Senate will be his last.

The longtime lawmaker wrote in an except from his new book The Restless Wave, published Monday on [f500link]Apple[/f500link] News, that not having to run for re-election provides him with the freedom to "vote my conscience without worry." McCain announced in July 2017 that he was diagnosed with brain cancer.