Both Sen. Lindsey Graham (S.C.) and New Jersey Gov. Chris Christie are speaking bluntly about entitlement reform, advocating means-testing for Social Security retirement benefits as a way to save the system for those who need it. “These are real ideas,“ Christie said in New Hampshire on Friday. “And, you know, I’ve had a lot of people say, ‘Well, why would you possibly want to suggest those things?’ Because we have to. We have to. And if you want to start a national conversation, let’s start one that matters.” “We’re $18 trillion in debt,” Graham told Fox News Sunday. “Eighty million...