Um, Trump IS a snake oil salesman.
Most of his products have failed, he's been living on money that isn't his since birth, in later years no one will lend to him except a corrupt German bank and then crooked rich Russian businessmen, he hasn't paid taxes in a decade or so because of his continual losses and those dandy loopholes for people who you and I will never be, and the only thing he has had left to sell anymore his been his brand name.
He's got one fabulous building in Manhattan to show for a lifetime of slick slight of hand. Add to that three unintentionally hilarious cringe reality shows including the one centered in the White House now, and all youstillhave have a charlatan who wasn't elected in all his previous runs because everyone saw him for the joke he is.
This time he managed to parlay his anti-Obama-isms into an election, and his entire legacy is centered around attempting to undo what Obama ALREADY has accomplished regardless plus a hefty tax cut for the rich of which the paltry bit for us little peons expires next year.
This isn't President of some special ed class or the remake of Idiocracy, this is someone who has what was until 2017 the most important job on Planet Earth. But that doesn't matter, because the USA is now a worldwide joke and the newest addition to the Third World club. Regardless of whomever gets elected in coming years and what they do, we are over, done. THAT will be Trump's legacy and how he will be noted in the history books.