Here's part of what they Republicans will be responsible for if the Supreme Court overturns the Affordable Care Act:
Well, first, the government would have a mess on its hands dealing with the unwinding of a complex health care bill which includes not only health care provisions, but radical changes to the student loan infrastructure, tax cuts for most (and tax increases for some), and more. The states attorneys general suing to overturn the health care law would find themselves shifting from popular ground to highly unpopular ground once it became known that the consequence of success would include collecting billions in back taxes which Americans suddenly owed because the tax break which existed under the health care bill had disappeared.
Yes, the Republicans will have successfully orchestrated a huge tax hike.