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(* -- why these seem to matter to me:
Reagan (Berlin Wall Speech),
Obama (America surmounts racial prejudice enough to elect a black president)
Kennedy (the huge changes in the world from the race to the Moon technology boost)
Well, Donald is one who was not a politician, yet he got into the White House, without any former political office experience. So, this could be considered an item, in historical study, also in psychological study of how a nation's population can function.
As for history, if the historian is trying to be factual, he or she might say that for pretty much any report there was a group who claimed it and a group who denied it. Plus, there was a major divide of almost half and half the U.S. population concerning President Trump.
Also, he won fewer votes than Hillary, but still was elected by the electoral college. So, this is an interesting fact for studying how the U.S. Constitution can operate.
So, he has a few unusual items which might be historically interesting, whether he is considered a good president or not.
But . . . also . . . when anything makes the news, it seems to me, these days, it will undergo an automatic erase when each next yet-another news item comes along. So, this could more or less happen with President Trump > whenever he comes to the end of his presidency, it is possible that some next news thing will just erase him.
Even at the local level, there will be local items which will be next for attention > someone's dog gets hit by a driver who does not stop, someone gets murdered, a hero pulls a driver out of a car that is sinking in a river, a mall's construction is held up because they find toxic waste under where they want to build. Things like this can instantly erase pretty much anything from attention.
Mr. Kim does some thing, and gets erased by kittens found in a bag by the highway.
On we could go.