Santorum 'doesn't have to prove himself' on social issues

In his 2016 presidential announcement, Rick Santorum said more about the American worker and less about social issues. For the social conservatives who backed him in 2012, is this cause for concern?

“Social conservatives don’t vote only on social conservative values,” Timothy Head, executive director of the Faith and Freedom Coalition, told the Washington Examiner. “They obviously want to be convinced that a candidate believes strongly in their values. But that’s not all they care about, of course.”