Republicans are engaging in a politically dangerous game by partially repealing Obamacare while leaving its core elements intact. President Donald Trump might have a more difficult time winning re-election in 2020 because Republicans are breaking their solemn campaign promise to repeal Obamacare fully.
I am no expert in health care, but I do remember that Republicans promised repeatedly that they were going to fully repeal Obamacare.
In 2015, the budget produced by House Republicans explicitly promised that it “repeals Obamacare in full—including all of its taxes, regulations and mandates.” On May 15, 2015, Senate Republicans on the Budget Committee made the same promise whey they pledged that the Senate budget “provides for repeal of Obamacare to start over with patient-centered reforms.” In 2017, these same “leaders” are running away from those promises.