Over time the government claimed the sole authority to interpret the Constitution, then proceeded to broaden its own powers ad infinitum and to strip the states of their original powers - while claiming that its self-aggrandizement was the fulfillment of the "living" Constitution. So the Constitution has become an instrument of the very power it was intended to limit!
I can see where this will take the USA. You don't want to go there if at all possible.
IMO, it still started going downhill with "Career Politicians".
Get the normal everyday people back into politics, running for office, (I know, a remote possibility), and you take away much of the BS.
It all started going wrong with the Fourteenth, Sixteenth, and Seventeenth Amendments to the Constitution. Roosevelt's "New Deal" basically was the end.
--Boris