Here is Robert Reich, ex-Secretary of Labor under Clinton making a call from the political left for people to take back control of their government from the corruption of money and power by corporations and the ultra-rich.
Sadly, it looks like the plutocrats have got things pretty well sewn up and only if there is real revolution with blood in the streets will the clock be turned back to a true republic. The US over the last few decades has passed over the Rubicon and like the age of Imperial Rome, there is a pretense of "republican" government, but the real control is in the hands of very few, very very rich people. There is no going back. There is only collapse and decay in America's future. I've given up any pretense of optimism. Dark days are ahead.