[5ersi]

"government exists to represent the interests of the capital-owning class" - this is especially true for US, because US politicians need enormous resources to get elected (mainly for media access) and basically the only way to get them is via contributions from lobbyists. US politicians understand that what gets them elected are not people, but money.

So if US people want to change that they would need to focus on expelling money from election process: severely limiting donations, especially from business, compensating candidates for the election costs, and mandating equal access to media covering elections (most EU countries have that and it works pretty well). But, don't expect politicians and corporate owned media to support that in any way - you would need a major grass roots movement to change that. Unfortunately at the moment I don't see any major shift in this direction.

[jmyeet]

Such efforts of reducing the impact of money on politics have been completely gutted by the Supreme Court who has decided that money is speech and the government can't limit that through campaign finance reform.

That too is a political decision.