Will it be possible to heal the extreme polarization and political division in the United States? How could healing be accomplished?

When the truth is revealed as to why things are happening we might have a good chance. There are some evil people in this world doing nearly unimaginably evil things and it needs to be stopped.

The amount of people who think the division is to be blamed on one "side" that needs to be destroyed is proof that the division is nowhere near healing. If you're advocating more division to solve division, then you're very far from a solution.

Step one is to stop thinking the division is the fault of one side. Recognize your own "tribe" in its role in fostering division. If you can only blame "them" then you're missing the forest for the trees. Looking inward is key. Acknowledge the ways that you and the people who agree with you dehumanize those who see the world differently from you, seeing them as "evil" when they're just trying to live their lives like anyone else.

When we can see other people as people and not as political labels, statistics, or some kind of malicious force, then we can start healing.

Like hate often is, a lot of it is fueled by ignorance. The media are masters at de-humanizing their targets, and creating division. I think if everyone would turn off the lying "news" and talk to each other, and really listen, they would realize that we are all still just people, just trying to live our lives the best we can.

Maybe an economic boom. If everyone...and I mean everyone, feels a lot better off then divisions begin to disappear.

The tone is set at the top. If we have a leader who seeks to unite us, we'll move down that path. The current POTUS seems to prefer to keep the US divided, so I don't see it happening under his tenure as president.

Nope, any chance we may have had was destroyed by Obama.

52 million light themselves on fire in protest. The sun darkens for a while. CNN goes off the air. Michael Moore flees to Canada. Canada sends him back. The rubble is carted away. Rebuilding commences. All is swell

Not likely. There's too much moralizing, too many people are willing to sacrifice all principles to win, and everyone who disagrees is evil, sub-human scum. Some kind of armed conflict is probably inevitable.

Thinking back in time, prior to Trump, I never recall a time when we had such extreme polarization, and that tells me that a large segment of our population is being used by the political machine through propaganda.

Close down the internet for a month or two. Blow up the satellites and done. Everything will be back to normal somewhat

Probably not right now.
Though imagine how different people would be if social media/news sources and the internet shut down for just 1 week.

You need your own Nelson Mandela who speaks of peace and reconciliation. A person who has learned empathy by taking a lot of hard knocks in life. Someone who most people can love and look to with admiration because of what he/she has been through.

Did I manage to sound like a soothsayer ?

Not anytime soon.

It will. We all know that this will break. The current leadership will age out. The melting pot will continue to cook.
No civil wars, no implosion.
It will take a young moderate. A cleaned up version of bill clinton, maybe....

Yes, people need to accept each other and acknowledge a shared culture and values

Possibly, once critical mass is reached by enough people in the US waking up and realising that the threats posed to their way of life by the effects of climate change dwarf any other perceived threats they face.

No