That's the funniest thing I've heard in my life.

Let me give you a sense of where America is on the political spectrum:

|1 ----------2-----3-------------4-------5-------------6-----7----------------------------------8--------9---------------10|

1. Anarchy
2. Communism
3. Socialism
4. Scandinavia
5. Rest of Europe
6. Centre
7. Australia
8. USA under Obama
9. USA under Bush
10. Fascism

America is WAY to the right. Nowhere near even the semblance of socialism. Your "socialist" healthcare system is nothing more than mandating that people buy private health insurance if they can afford to. Your "socialist" higher education system is dominated massively by private universities, and citizens who wish to study at them have to be born into wealth or be lucky enough to either get a scholarship or have a family willing to go into massive debt.

Your "socialist" regulations of your banking system are so lax that you have private banks that send the entire world into recession or depression. Your "socialist" economic system is so underdeveloped in terms of government services that there are horror stories about the lines at your DMV. Your "socialist" gun laws make a mockery of the concept of protection of the populace. And your government does its best to destroy unions that are nothing more than collections of people within similar jobs hoping for bargaining power, because it challenges private corporate power.

If you honestly think that America is "too socialist", or even "slightly socialist", then you need to recalibrate your sense of the political spectrum. Hillary Clinton, for instance, is more right-wing than Australia's right-wing current Prime Minister, Malcolm Turnbull, and is comparable to our previous far-right-wing Prime Minister, Tony Abbott. Bernie Sanders would be considered a right-wing member of our major left-wing party (the Labor Party). Basically, he would be in the centre of Australian politics... which is still to the right of the true "centre" of the spectrum.

As for so-called "Political Correctness", that's one of those terms that gets invoked by people who have no solid argument on the issue. A real argument that could be put forward is that, when you construct rules around what can be said, you usually end up hiding the problem rather than fixing it. But those who invoke the "PC" argument aren't doing that - they're arguing that they should be allowed to say whatever they want. And mostly, you have that right (there are certain, very specific, restrictions on speech - such as no shouting "Fire" in a crowded theatre and causing a stampede that could kill people). What you don't have is the privilege of being able to say it without people calling you out for it. It's not about political correctness, it's about not being a dick, and being called out for being a dick if you choose to be one.

Oh, and "return to Capitalism"? Really? Even when Americans choose to be "socialist", they do it in a capitalist way. Instead of introducing a single-payer healthcare system, which isn't even socialist (to be socialist, the government would have to own the means of production, not just centralise the payment system for healthcare), your Democratic party introduces a system that primarily benefits the Health Insurance Industry (did you ever wonder why all those private companies actually argued in favour of Obamacare?). America is beyond mere Capitalism. You could call it Ultra-capitalism. A "return to Capitalism" would mean moving to the left for America.

How any former Sander's supporters can still vouch for Clinton is beyond me

Because Trump is the worst political candidate in the history of American elections--by a wide margin--and anyone, Hillary included, is a preferable alternative.  Just because you can't get the best person in Office doesn't mean you have to settle for the worst.  If Bernie doesn't secure the nomination at the Convention (or if he chooses to drop out early), a vote for Hillary is the best, strategic option to ensure that the man endorsed by both Putin and Kim Jong-Un doesn't get elected--and Bernie himself has said this.

 1 We're supposed to believe that Clinton is any better ?  2 Bernie the best person in office ?  3 He's very far away from that and 4. not enough people criticize him for speaking rubbish much like Trump does ... 

5 Clinton is another puppet of the big corporations that you so much hate for the income equality. 6. She exists to turn citizens into debt prisoners for big corporations to leverage on ...  

7 Nobody is voting for Johnson yet his policies are much better than Clinton's but they won't hold themselves to their own higher moral standards LOL ...