As a non-American, what I see is that many Americans, especially those commenting here, suffer from a particularly virulent form of "the grass is greener over there" syndrome. Europe is a beautiful place, but behind the beauty lies ugliness of a different kind. The US has many problems, but there's also a reason why Silicon Valley and people like Elon Musk and Jeff Bezos are in the States.
If you value knowing your place in the social hierarchy and having less and paying more for it, then by all means, adopt the European model. However, as jblow said above, there are so many bright spots in the US, too, so maybe it's better to just work on the rough spots instead of always looking over the fence.
Why? Because I thought his policies were a combination of marginally impactful, dumb, and/or unrealistic. Eliminating free trade agreements isn't going to bring secure jobs back to the Rust Belt. Massive expenditures to get everyone to college is a terrible plan --- and one the people hit hardest by the decline of manufacturing do not want. Single-payer health care is unrealistic and nationalizes something close to 20% of our entire economy.
The problem with these policies isn't "socialism". It's that they won't work.
Switzerland isn't a socialist country (look how the Swiss health care system works). The issue here isn't a crazy problem Americans have with "Socialism" (although using that term to describe a policy isn't a great way to win support for it).
Anything that helps the average American is Communism, and we can't have that, can we?