No...
You are indeed right that we have these clauses.... and we also have the limits written in of what specific powers are granted to our federal government.. with all other powers then granted to the states of the individuals... For changes in actual powers or in the actual jobs of the different branches, we indeed have the amendment process...
And just because we have had the government expanding their power without being challenged (because the governmental power base has made itself very hard to question) des not mean that they are actually supposed to have the power they have grabbed...
For as much as those on the left love to say the government over-reached with the patriot act... you and ones like jokey sure don't mind backing them up when they grab other powers that fit your political mantra
Constitutional Amendment Process
That is how changes to the constitution and constitutional powers are supposed to be done... and because it has been abused and thwarted, it has made it easier for our government to usurp more and more power that was granted to others (states, and individuals)
Again.. they government was not set up with unlimited powers and only limited by things specifically denied in the constitution... it is indeed the exact opposite.. that limited powers (though strong authority and enforcement in those limited powers) were granted and a specific process put in place for the change of those powers or the addition of those powers.. quite simply spelled out, the federal government was not and is not supposed to have any powers not specifically granted to it within the constitution... powers not had by the fed revert to the state, and powers not held by the state revert to the people.. a simple concept and brilliant in its setup... but a simple concept that has been warped by the ever expanding power whore that is the governmental system