Why does Trump continue to lie, cheat, and steal about ANYTHING Obama?   This article makes some pretty good points.  Would consider it an opinion piece except it states some pretty concrete facts about Trump's deep seated jealousy.

 
A few highlights;

 
1)  "what became clear in the next three and a half years is that Obama remains something of an obsession for Trump; the subject of a political and personal inferiority complex."

 
2)  Trump has combined "a mix of anti-intellectualism, racism, vengeance and primitive envy over everything from Obama’s Nobel peace prize to the scale of his inauguration crowd and social media following."

 
3)  “Trump’s fact-free fixation on Obama dating back to birtherism is so absurd and stupid that it would be comic if it wasn’t so tragic.”

 
4)  "Beyond political expediency, there is a more profound antipathy at work. From the Iran nuclear deal to the Trans Pacific Partnership, from environmental regulations to the Affordable Care Act, Trump has always seemed to be on a mission to erase his predecessor’s legacy. With few deep convictions of his own, Trump found a negative reference point in Obama. Between 22 November 2010 and 14 May 2020, he tweeted about Obama 2,933 times, according to the Trump Twitter Archive."

 
So, why do you think Trump is totally obsessed with Obama?