America is a democratic society, and its rich are just ordinary citizens. They may have more $$$, but they are otherwise equal to others, not a separate noble caste.
In other words, they're "just like us" ... but they should never have to mingle with the peasant caste when they travel! That would be un-American!
However back in the real world, in the US deistically the rich count far more than the average person, when it comes to the government, hence why so many in the government kowtow to them.
They might only get one vote themselves, but enough money means you can buy the votes of others, by hook or by crook if necessary (The whole reason for Fox News' existence is to control who people vote for by limiting the information they receive). At that point, they also get to dictate policy.