No, of course not, he's only piled on his small share of abuses and usurpations that have, taken together over the years, essentially worked to the same effect that there would have been had these actions been designed to reduce the people under absolute despotism. Who cares how much of whose fault each little nibble is attributable? In the long run, the end result is the same. Effectively, the executive branch no longer has any meaningful constitutional restraint upon the exercise of its power. Whatever any administration can get away with it will do. Obama's administration has effectively made war upon Libya without even a nod to the perrogatives of Congress. Regardless of how much of the slide is directly attributable to his administration the effect is a repudiation of the Constitution by government.