Tell you what, why don't you start working on the Constitutional amendment to make that type of government happen and we can talk about it. Of course you would probably have to move to the US, and maybe become a citizen, so that's not happening, is it? Just as well.
The US has always been divided, right from the very start. That isn't a particularly bad thing unless you want to throw a parade to celebrate a "People's democracy" and cure weak liberalism. The US unifies when given sufficient cause, otherwise people go about their business.
In some important ways the Democratic and Republican parties are becoming more different, and agreement on some basic issues is beginning to fall apart. The Left has never really like the US, and it is going to tear the US apart.