The obsession with Obama and Hillary is a direct, clear-cut manifestation of trump’s mental illness. His psychopathic malignant narcissism COMPELS him to behave this way. HE HAS NO CHOICE IN THE MATTER. It’s the deep well of insecurity and anxiety that forces tiny to obsess on Obama and Hillary.
He thinks (and apparently his synchophantic followers agree) that it makes him stronger in comparison. Of course, rational observers know that it’s mental illness at work.