Question: should we more like Chile ...or Bolivia?
Invalid question.
We should be what the founders built.
Period.
Yes, we should. However, when more than half of the people occupying the space in which the Republic exists truly believe otherwise and vote that way, that, for that majority, will become the invalid question.
So the question is, "How close are we?" The particular genius of our founders was to balance "Democracy" with "The Republic." The balance is skewing toward "Democracy," at the expense of "The Republic."
Thanks for pointing out that I wrote the question in the wrong form. "....should we more like Chile ...or Bolivia? really ought to read "....WILL we become ...?"
The Romans spent 3 centuries trying in one way or another to restore their Republic. They failed. How do we not fail? We have many more resources than they did. How are we going to use them?