If one look's into Trump's history and family, it is not a pretty picture. His father was arrested in 1927 for a protest where he stood with the KKK (Ku Klux Klan). In the mid 1950's he was investigated by Congress for illegal profiteering on contracts and Woody Guthrie even wrote a song about him and accused him of stirring up racial hatred with the tenants of some of his apartments that he rented.
Donald himself started off with over a million dollars from his father. He declared bankruptcy 6 times, (Chapter 11), a method by which a company can remain in business while wiping away many of its debts (usually to suppliers and staff). He is a self-confessed lecher with an undisclosed and unnatural attraction to his own daughter, a liar, a narcissist and a Putin fan at the cost of his own security agencies reputations.
He denies Mueller's investigation as a witch hunt even though there have been dozen's of indictment's and members of his entourage (not to mention his advisors and lawyers), have as much as admitted being on the payroll of rich Russian oligarchs. So far as we know to date, there is no direct evidence linking Trump to all this illegal activity.
Then again, Occam might claim that the simplest explanation was that Trump is a Russian agent that has a fairy godfather named Vladimir.