Former Pennsylvania Sen. Rick Santorum has announced his “Faith, Family, and Freedom” tour in Iowa. Santorum may be dragging up the rear in the line-up of Republican presidential candidates, but I am grateful to him for being the only candidate who insists that the so-called “social issues” remain an integral, explicit part of his agenda.

That’s not to say that the other conservative candidates disagree with Santorum’s take on these issues – traditional values, abortion, marriage – but Santorum has been the only one to insist that you cannot consider the economy independent of the way the individual human beings that make up the economy behave.