What is popular sovereignty and how does it impact our country?

Popular Sovereignty is an important enlightenment idea that established that the sovereign power is vested among the people who are being governed and choose to be governed. This means the government gets power from the people and the people who are being governed are the source of political power. This is present in the US because the US Government politically acts based on the citizens. To be specific, people can express themselves to the government by having the obligation to vote and directly participate in the government by attending town meetings and such. 

Hope I helped! Happy New Year! May 2018 give you a great year ahead to you and your family!