( CNN) The recent breakdownof Republican efforts to repeal and replace Obamacare can be blamed on discrepancies about policy more than anything else.

For seven years, Republicans throughout all stages of government were able to enunciate the simple message that President Barack Obama’s signature health care law had to go, and a specify of better, market-based policies needed to replace it.

But once the GOP captured control of the White House and both houses of Congress, it became clear that the devil truly was in the details. Within their own ranks, Republicans remain subdivided on fundamental questions of policy — whether to change how Medicaid is financed, whether there should to be tax credits to help low-income Americans afford private insurance, and how far to be done in order to deregulating the marketplace.