Based on the definition of bureaucracy [1] I disagree with you. I do think the tail is wagging the dog in American politics these days but I do not think bureaucracy is the reason. I actually think the bureaucratic parts of our government work quite well. Examples being the National Park Service or NASA.

I think the real problem is that our elected representatives (politicians) are so concerned with reelection that they manipulate their constituents rather than acting as representatives. It's more of an electoral problem.

[1]: https://en.wikipedia.org/wiki/Bureaucracy