You need to review the Courts decisions over the last 4 years---,
Allowing Corporations to pile money into campaigns---one person or group drops millions and that can change the direction of the country. A long stretch to find that remotely in the Constitution.
The Court changed a legislatively directed fee, in a law, to a tax. Supposedly only the congress can levy taxes
You are correct in that we are not a Democracy but a Democratic Republic--where one person represents thousands--.