Yep, that's where his hatred of President Obama took real root. The thin-skinned orange menace probably thinks of that humiliation by Obama, over and over.
Its his reason for trying to undo anything Obama passed, during his Presidency. He thinks it will undo the pain of his humiliation but it won't. Just like he can't undo that title of "impeached president" next to his name in the history books.
Perhaps the roast at the WH Correspondent's Dinner is a motivation. But -- really -- the Mother of Motivations is racism. You could surmise that perhaps Trump just couldn't take a joke. That is true: When did he -- ever? But there's more to it. Obama -- especially Obama -- should not have made a buffoon out of Trump because Obama is black, and Trump is white. He feels entitled to the deference. He probably thinks no black people should make fun of him.
I've yet to read books like "What's the Matter with Kansas". But I see an underlying psychology -- and mass-psychology no less -- behind Trump and his minions. It's rooted in some stupid ideas about human progress, bloodline entitlement and other aspects.
Some of Trump's supporters, for instance White Nationalists and Neo-Nazis, always look back 2,000 years at the Great Roman Empire for their paradigm of greatness. In looking forward, they are also worried about the "pollution of the White Race". They simply can't accept the fact that much of the human race a few thousand years hence will all be something of a mauve color, or all sorts of varieties. They somehow assume that the "White Race" is something separate or unique, or that the White Race doesn't have any Black -- or other -- origins.
So being Stupid, as they are, they're all wrapped up in differences like skin-color, noses, eyes, lips, hair and hair-color -- things that are inconsequential aspects of DNA. If the human race had been blind, we wouldn't have any of the problems that have plagued us over race since God-knows-when.
Thus, when a Black Man succeeds as President, they cannot accept it. So Barack Obama's Legacy must be erased. Human and American History cannot show Obama as a consequential or successful President. In their minds, they think that Obama was an "Equal Opportunity Affirmative Action" President. He really didn't earn his way! He didn't deserve to be President on his own merits! His supporters elected him as an Affirmative Action initiative -- because -- he was Black!
Therefore, Trump had to disband Obama's Pandemic Response Team -- because it was Obama's, and because Obama was black. Trump had to attempt destruction of the ACA -- because it was Obama's legacy, and -- Obama was black. They had to undermine the State Department, because it was Obama's and Hillary's, and because Obama was black. It could not be otherwise: Obama was black, therefore, everything he did had to be wrong. Of course, there's all the "Deep State" palaver, but that's because they are also Ignorant. If they want to understand bureaucracy, they need to read a serious book about it -- perhaps, Anthony Downs' "Inside Bureaucracy" -- a work done under RAND Corporation oversight on contract to the US Air Force. But much of their worrisome fantasies about government are merely -- fantasies.
That is why we must erase the Trump Legacy. What is there to erase, though? We must erase the erosion of Rule of Law. We must erase the politicization of the federal agencies and their employees. I can think of many things that need to be erased, and they are all bad things.
They are bad things, not because Trump is White, but because Trump is bad. His supporters are either ignorant, or they are bad. They hate America, hoping to turn it upside down with the idea that all America has been over the past 100 years of unparalleled prosperity is somehow undesirable. They cannot accept the idea that a Mixed Economy with public "markets" and traditional private-good markets owes to both aspects all that prosperity. And their disabled thoughts and ideas (if you could call them such) are contrary to American values shared by thinking, decently-educated people.
Do I want revenge? Probably. But I'm not wrong here. Not by a long shot.