Senator John McCain was on a roll. In a room reserved for high-stakes gamblers at the Foxwoods Resort Casino in Connecticut, he tossed $100 chips around a hot craps table. When the marathon session ended around 2:30 a.m., the Arizona senator and his entourage emerged with thousands of dollars in winnings. A lifelong gambler, Mr. McCain takes risks, both on and off the craps table. He was throwing dice that night not long after his failed 2000 presidential bid, in which he was skewered by the Republican Party’s evangelical base, opponents of gambling. Mr. McCain was betting at a casino...
