IMO, Donald Trump is a sociopath.  As such he sees himself "above" the rest of us, essentially "beyond reproach. Here's the meaning: above (beyond)  reproach  phrase of reproach  1.  such that no criticism can be made; perfect.   synonyms:	perfect, blameless, above suspicion, without fault, faultless, flawless, irreproachable, exemplary, impeccable, immaculate, unblemished, spotless, untarnished, stainless, unsullied, whiter than white; informalsqueaky clean    "I never claimed to be above reproach" " 
If a person has this view of the world, any investigation of his/her actions is, by definition,  unjustified and unfair......period...end of report.  Gary Crum