Republicans are having a hard time agreeing on how and when to repeal Obamacare. The Patient Protection and Affordable Care Act (ACA) is difficult to unravel because it was designed to alleviate a problem too costly for the government alone to fix. The health care law was passed to make medical care more accessible for low-income Americans and those with pre-existing conditions. This was to be done largely by socializing the costs and spreading the burden among a much broader segment of the healthy population. This is not unlike a pyramid scheme, where a broad base of people at the bottom get ripped so a few at the top can benefit.
Republicans have it within their power to use a process known as budget reconciliation to repeal Obamacare provisions that involve the budget, with a simple majority vote. For example, Republicans can repeal the taxes, fees and appropriations that fund the ACA. The individual and employer mandates, with associated penalties, can also be repealed. What Republicans cannot do is repeal the costly insurance regulations that drive up premiums for most people. That would require the help of perhaps a dozen skeptical Democrats.