While Congressional Republicans continue to hash out their plan to repeal and replace Obamacare, the executive branch has already taken action to undo some of the law’s most destructive features.

Last month, the Centers for Medicare & Medicaid Services (CMS) cut the enrollment period for 2018 Obamacare exchange plans from 90 days to 45. This is one of several new rules that CMS enacted to address one of Obamacare’s central flaws: the fact that the law makes it far too easy for individuals to game the healthcare system.