I think it would help us to understand where O is coming from—in expanding the scope of the Federal government—by keeping in mind the Progressive's view of the Constitution; that, while the written Constitution was appropriate for the times in which it was drafted, it now is a museum piece of no importance for today because historical circumstances have changed and a fixed interpretation of the founding documents cannot possibly be an appropriate basis for governing.
Therefore, the current Administration feel that what they are doing is perfectly natural. O does not feel constrained by the Constitution's limits on Federal government. Neither did Pelosi when she uttered the famous "Are you kidding? Are you kidding?" in response to a reporter's question about the Constitutional basis for the healthcare bill.
And, that explains O's—along with the Progressives in Congress—lack of reticence about expanding the role of the Federal government.
I believe the thought never crossed their collective, Progressive mind that the people would have a different opinion. So, the results of the upcoming elections should be a shock to them.
We can only hope.