In my foreigner eyes Bernie is trying something similar to European countries where you have right to get decent healthcare - even when you're poor as rat.
US is NOT ready for radical changes and some people may think that current system is best the possible already (because US is seen as the best country in every way, most advanced society on earth, so on...) I can be wrong about this, but seems like if you can't afford your life in US it's your own fault, if you have hard time to pay rent, healthcare, education, etc.. you're lazy or just too dumb. So money is - in this system - sign of some kind of talent and rich people are worshiped. That's why there isn't enough fight against plutocracy and money in politics. American (US) way is like it is, people love it and hoping for better future - like some how current mechanism is going to lead into magical greatness.
Huge tax cut for the rich is just fine in US, but if someone even suggest something like that here in Finland - people will laugh at it and kick ass (as long as needed), because you can't improve any society by doing so. I can be wrong, but there's lack of thinking your country as whole, think what policies are needed to really make a difference (immigration isn't your #1 issue). Kick those damn plutocrats out of politics and bring some real democracy back in where it should be - restore trust in politics and take care of your countrymen.
I'm pretty sure Bernie will fail again, but by saying this I don't mean that his policies are harmful - it's not about that at all. Bernie's Democratic Socialism is hard to understand, because it's literally against current system and in so many ways. Another thing: you can't copy social systems like that, it's really long process and people need to know how things really works - what it takes, because whole society needs to see it as good and safe system. As long as there is some doubt about it, there's no point to make big changes.
I live in society where we have all those things (practically speaking), like if someone is working in low pay job (we don't have any minimum wage law here in Finland), you can get some benefits from government - so you get what's really needed for everyday life, but it's just minimum level of "wealth" (you're still relatively poor, but you have always home and enough food, good healthcare and education).
US need paradigm change first, because you can't get different priorities without it - and those new priorities will show you what ground rules are for real democratic socialism. It's long way to go, but you'll get there someday.
OR
Current plutocrats wake up and make things happen - if that's the way, it will come really fast. They have enough money to turn things around pretty quick.