The constitution is the set of rules that all government officials swear an oath to uphold. That seems simple. If enough people want to change those rules, there are provisions to do so.
But wannabe despots, dictators and their ilk want to take the fork in the road of least resistance to achieve their goals. It's their task, their job in working for the bankers and corporations.
It's been signing statements by the executive branch overriding Congressional mandates here lately. Bush Jr. was straight out in your face in saying that "we'll do damn well what we please" with his signing statements. That crew of criminals was more old school. They dared anyone to challenge them and nobody did enough to matter.
Obama was criticized for his use of signing statements early in his game and so stopped doing it. In keeping with his contrived persona of 'change,' his handlers came up with something new ... 'statements of administration policy.' Same game, different name.
Signing statements and admin policy are used under the guise of unconstitutionality. If a law is unconstitutional, as most major legislation from a corrupt Congress is, then all the president has to do is veto them. Again, simple enough. Send the bill back to the drawing board. Of course following the rules doesn't move the agenda along.
The New York Times has some details on the continued executive branch power grab in 'Obama Takes New Route to Opposing Parts of Laws.'
Puppets don't have to worry about rules. They just move to the tune of the strings .....