Trump is a serial criminal. All of his crimes will never be discovered or prosecuted.

[Septua]

12. "We are dealing with a very mentally-ill person."

Correct, 'narcissistic personality disorder' to be specific.

https://www.psychologytoday.com/us/blog/the-human-beast/201608/does-trump-suffer-narcissistic-personality-disorder

1) Grandiosity with expectations of superior treatment by others.

2) Fixated on fantasies of power, success, intelligence, attractiveness, etc.

3) Self-perception of being unique, superior, and associated with high-status people and institutions.

4) Needing constant admiration from others.

5) Sense of entitlement to special treatment and to obedience from others.

6) Exploitative of others to achieve personal gain.

7) Unwilling to empathize with others' feelings, wishes, or needs.

8) Intensely jealous of others and the belief that others are equally jealous of them.

9) Pompous and arrogant demeanor.