I'd wager that in a few decades Trump will have become so thoroughly discredited that it will be as hard to find someone who will admit to having supported him as it is, today, to find someone who'll admit to having been a Nixon supporter. And even as that happens, Obama's reputation will still be going strong. Of all the presidents to serve since Kennedy, Obama is the most likely to end up on our currency. The last guy who pulled us out of a financial crisis as bad as the one Bush left us wound up on the dime, after all, and Obama will have the added selling point of his symbolic value as the first black president of a nation with a long history of black slavery.