I don't think US-citizens by and large want that change bad enough to accept restrictions upon their freedoms and an end to low taxes, European-level wealth redistribution does not seem to be popular in the US. I suppose they'd like the result without doing it. Unfortunately that's like wanting to be great at tennis without wanting to put in the training: understandable, but not happening.
I have no doubt that American can-do and talent will get it done.
None.
Just decide what it is, what the scoreboard looks like and get it done as Americans the American way.