The Galen Institute lists 23 changes to Obamacare imposed by Obama administration fiat, without congressional approval, including: Delaying the individual mandate, the small business exchanges, and employer mandate reporting; implementing a Medicare Advantage patch using funds allocated to other purposes; and allowing subsidies to flow through federal exchanges even though not authorized.
A unifying feature of the Obamacare unilateral administrative changes was to postpone negative effects of Obamacare until after the 2014 election.
In so doing, the administration was not acting within allowable discretion to implement the law, but rather, using political criteria to dictate which parts of the law would be enforced and which parts ignored for political reasons.
The decisions of the current Supreme Court term reflect the extent to which the Obama administration has disregarded the rule of law.
There have been at least 12 cases involving administration action in which the justices have ruled unanimously against the administration.