Do Republicans face a “philosophical and fundamental” internal split, one that threatens decline and potential irrelevance? Charles Krauthammer doesn’t think so, as he explains in his new column.

What divides Republicans today is a straightforward tactical question: Can you govern from one house of Congress? Should you even try?

Can you shrink government, restrain spending, and bring a modicum of fiscal sanity to the country when the president and a blocking Senate have no intention of doing so?

One faction feels committed to try. It wishes to carry out its small-government electoral promises and will cast no vote inconsistent with that philosophy. These are the House Republicans who voted no on the “fiscal cliff” deal because it raised taxes without touching spending. Indeed, it increased spending with its crazy-quilt crony-capitalist tax “credits” — for wind power and other indulgences.

They were willing to risk the fiscal cliff. Today they are willing to risk a breach of the debt ceiling and even a government shutdown rather than collaborate with Obama’s tax-and-spend second-term agenda.

The other view is that you cannot govern from the House. The reason Ryan and John Boehner finally voted yes on the lousy fiscal-cliff deal is that by then there was nowhere else to go. Republicans could not afford to bear the blame (however unfair) for a $4.5 trillion across-the-board tax hike and a Pentagon hollowed out by sequester.

The party establishment is coming around to the view that if you try to govern from one house — e.g., force spending cuts with cliffhanging brinkmanship — you lose. You not only don’t get the cuts. You get the blame for rattled markets and economic uncertainty. You get humiliated by having to cave in the end. And you get opinion polls ranking you below head lice and colonoscopies in popularity.

There is history here. The Gingrich Revolution ran aground when it tried to govern from Congress, losing badly to President Clinton over government shutdowns. Nor did the modern insurgents do any better in the 2011 debt-ceiling and 2012 fiscal-cliff showdowns with Obama.

Obama’s postelection arrogance and intransigence can put you in a fighting mood. I sympathize. But I’m tending toward the realist view: Don’t force the issue when you don’t have the power.