> but from an outsider America has become one mouthpiece

Really? As a naturalized American I see diversity in the USA's media. Do you have an example?

From what I see, there are two big voices in the media politically.

> rarely do I see dissenting voices in the media

Again, we need an example. I see the official line from the current party in power, and the counter arguements from the mainstream media as a whole. The current party only has a media output from very few mainstream sources.