Since President Obama signed the Affordable Care Act into law, he has changed it five times. Most notably, he suspended the employer mandate last summer. This is widely known, but almost no one seems to have grasped its significance.
The Constitution authorizes the President to propose and veto legislation. It does not authorize him to change existing laws. The changes Mr. Obama ordered in Obamacare, therefore, are unconstitutional. This means that he does not accept some of the limitations that the Constitution places on his actions. We cannot know at this point what limitations, if any, he does accept.