This is an open question.
I think public opinion plays a large role in shaping governmental policies in the United States today.
This is because mass media presence is all over the nation and their broadcasters and reporters have a strong presence in the formation of the opinion of the American people.
I have to say that not as much as 15 years ago because the credibility of these mas media slots has reduced, particularly in young people, students, and professionals in their 30s. This segment of the audience likes to be more informed and do not only believe what the news says. They like to do research on their own, listen to other opinions, and come up with their own idea.
However, the adult audience stills paying so much attention to what opinion leaders say, and basically, they follow through.
