Even when something has overwhelming support, it can be nearly impossible. Often, people will support something (as they indicate to pollsters) but vote against it because of the ties of politics: "I'll vote against the thing that bugs you if you'll vote against the thing that bugs me".

We've had no nontrivial amendments in half a century, and even nontrivial laws are rare. The national conversation has taken a nosedive, and I believe a considerable piece of it is that there is a large minority who benefits from nothing happening. Any "compromises" happen by skirting the rules: Supreme Court judgments, Executive branch declarations, and other actions that bypass the intended routes of discussion.