Honestly, despite having a wife from the US (not an US citizen anymore), I agree with you.

It is really weird to me that such a thing as lobbying can be legal. Or the fact that you can donate to an election campaign so that they have more money to influence people.

And it is even more surprising that the vast majority of US people don't even question these things. I have the theory that American exceptionalism hinders their critical thinking when it comes to these kind of subjects. Ie "If we decided to do it like this, it means is the best way possible".