How do American citizens exercise popular sovereignty?

Popular sovereignty is the concept that all power is ultimately derived from the people. This means that every time you vote or express an opinion to a local leader / politician, you are shaping the way this country is run. The problem? Old while men are the ones with free time on their hands, so they are the ones going out to vote and becoming / influencing politicians, which makes the national vote a reflection of - not the actual public's opinion, no - but instead the opinions of those who have lots of free time on their hands ... (*cough, cough * white nationalists)

Americans express popular sovereignty every day ... kind of.