Article 1, Section 1 of the United States Constitution states:

All legislative powers herein granted shall be vested in a Congress of the United States, which shall consist of a Senate and House of Representatives.

There is nothing ambiguous in that single sentence. All legislative powers really means just that, all legislative powers. There are no exceptions for executive orders or the utopian desires of our new progressive princes, Obama's politically appointed czars. The Constitution was designed so that all laws were to be submitted in public, written and debated in public, voted on in congressional committees in full public view and the bill's final votes for passage were to be cast in public.

From forbes.com:

First, there was the delay of Obamacare's Medicare cuts until after the election. Then there was the delay of the law's employer mandate. Then there was the announcement, buried in the Federal Register, that the administration would delay enforcement of a number of key eligibility requirements for the law's health insurance subsidies, relying on the "honor system" instead. Now comes word that another costly provision of the health law-its caps on out-of-pocket insurance costs-will be delayed for one more year.

Why does Congress allow a sitting President to alter a law that they themselves passed and which was signed into legislation? Such alterations are simply unconstitutional.

If a President can unilaterally change or alter Obamacare or any other Federal law without Congressional approval, then our political institutions have been effectively dissolved, and America has fell into the dark pit of unbridled despotism. 

By delaying the employer mandate (whose fines are defined as taxes by the Supreme Court), but not the individual mandate. Obama has created a two-tier tax system based on the employment status of the taxpayer. That is simply unconstitutional under the 14^th Amendment's equal protection clause. So this is more than a just a delay of a Federal law, this changes the amount of taxes some taxpayers will have to pay...entirely by executive fiat.

Obama's illegal, immoral (as if our Narcissist-in-Chief actually gives damn about morality) and unconstitutional honeymoon with tyranny can only lead to further and more destructive abuses of existing Federal regulations. Since this President has seemingly gotten away with delaying a Federal law for one year, what's to stop him from delaying any federal laws from being enforced for two years, five years or even twenty-five years?

We all know that famous ribald joke:

A famous man at a charity banquet asks the beautiful young woman next to him, "Assuming that we gave the money to charity, would you sleep with me for ten thousand dollars?" After some thought she says, "Yes." "And would you for two dollars?" "Why, what do you think I am!" "We've already decided that. Now we're just haggling about price."

Just substitute despot for prostitute and we are haggling over what constitutes a post-Constitutional America.

Could Obama expedite implementing the Senate's version of  the current immigration reform bill by simply delaying the funding to build and maintain the new border fences?  Easy as the stoke of a pen.  How about changing tax depreciation tables without Congressional approval? Just sign there, Mr. President.

Why would Obama even need Congress or the Courts, if the laws Congress passes are flexible, changeable, spongy, adjustable, pliable, ductile,, malleable and ultimately removable? He simply wouldn't.  With such singular  dictatorial authority,  Obama may easily eradicate his political enemies and the ensure the payoffs of his political cronies.

America is dangerously close to having a functional 21^st century tyranny sustained by a rampart of interlocking of governmental databases and a zealous bureaucracy that seeks out  and punishes  any reactionary dissent.  All this with the blessings of the MSM, whose fate will be the fate of all "useful idiots" once their usefulness has passed.