Is this really that important? Reuters:

Republican presidential candidate Rick Santorum challenged President Barack Obama's Christian beliefs on Saturday, saying White House policies were motivated by a "different theology."

A devout Roman Catholic who has risen to the top of Republican polls in recent days, Santorum said the Obama administration had failed to prevent gas prices rising and was using "political science" in the debate about climate change.

Obama's agenda is "not about you. It's not about your quality of life. It's not about your jobs. It's about some phony ideal. Some phony theology. Oh, not a theology based on the Bible. A different theology," Santorum told supporters of the conservative Tea Party movement at a Columbus hotel.

When asked about the statement at a news conference later, Santorum said, "If the president says he's a Christian, he's a Christian."

But Santorum did not back down from the assertion that Obama's values run against those of Christianity.

"He is imposing his values on the Christian church. He can categorize those values anyway he wants. I'm not going to," Santorum told reporters.

Santorum did indeed "categorize" Obama's values. He said his "theology" - presumably from where those values spring - is not "based on the Bible."

It isn't a question of Santorum being right or wrong. It's a question of relevance. Does it really matter whether a candidate bases his political beliefs on the Bible?

In the narrow world of social conservatives, no doubt the answer is yes. As for the rest of America, it probably doesn't matter as much and indeed, puts off independents and potential swing Democratic voters who may share many of those "values" with Obama.

If one wants to argue that the Obama agenda isn't good for America, that's winning politics. Arguing that the president's agenda isn't based on the Bible is a different story.