How has social media affected politics in the united states?

Social networks have increased the public's political involvement.

Explanation:

The United States has proof of this in the last elections; at the beginning, social networks were welcomed as a proof of free expression and as a democratic tool. But after that, it has been speculated that the social network was manipulated for unethical purposes during the general elections, through non-fair propaganda, fake news, and computer programs that altered the distribution of information.

I hope this information can help you.