A pillar of the American system is that government is instituted to protect the rights of people to conduct their lives as they see fit. Not everyone is going to see fit to be an exemplar of beneficial human endeavour.
The USA is almost absurdly democratic. Elected executive and vice; elected bicameral legislature. Same model in almost every state, where most (all?) also have elected AGs. Some with elected judges. Elections for county officers. Elections for mayors and councils and municipal officers. All free; compulsion is approximately non-existent. All essentially fair as far as anyone can tell, although some jurisdictions seem determined to have few safeguards. In Canada, I cast one vote in a federal election and one vote in a provincial election and a handful of votes in a municipal election, only for mayor and council members. Which is more democratic? If the US isn't democratic, what is Canada?