Inside the Fight to Topple Lindsey Graham—and Trump’s Senate Majority

With a cheery drawl and an expression somewhere between exhausted and dead-eyed, Lindsey Graham spent a Sunday morning in November rattling off the greatest hits of GOP impeachment conspiracy theories before most Americans had finished their second cups of coffee. “When you find out who the whistleblower is, I’m confident you’re going to find out it’s somebody from the Deep State,” the South Carolina senator insisted during Fox News’ 10 a.m. block. Graham, a former Trump foe who has become the president’s chief defender in the Senate, then shifted into...