I don’t know where you put the line to qualify as a democracy but America certainly wasn’t over it before the Civil Rights Act; before that, we were an apartheid state. And if there was a time when Congress was responsive to the will of the people, it ended with Citizens United.

I would classify America as more of a hybrid kleptocracy/democracy. Local elections are mostly democratic. State level? Sometimes. At the federal level, government is not responsive to the will of the people at all.