In a recent report from the academic journal Perspectives on Politics, the United States is not a democracy, but is instead, an oligarchy. For those who aren't up with fancy words, this means that the US government is very, very corrupt.
The study's opening question is quite an eye-opener in itself, where it asks: "Who governs? Who really rules?" in the United States. The answer: "Despite the seemingly strong empirical support in previous studies for theories of majoritarian democracy, our analyses suggest that majorities of the American public actually have little influence over the policies our government adopts. Americans do enjoy many features central to democratic governance, such as regular elections, freedom of speech and association, and a widespread (if still contested) franchise".
They continue: "But... America's claims to being a democratic society are seriously threatened". The findings in the report shows that there is instead "the nearly total failure of 'median voter' and other Majoritarian Electoral Democracy theories [of America]. When the preferences of economic elites and the stands of organized interest groups are controlled for, the preferences of the average American appear to have only a minuscule, near-zero, statistically non-significant impact upon public policy".