Is Trump Mentally Ill?

I haven't been blogging much lately because I'm feeling overwhelmed by the torrent of Trump's outrages, one after another; I can't possibly keep up. But here's a piece from The New York Times that caught my eye:

John Garner, a Baltimore psychotherapist, has launched an online petition that says Trump “manifests a serious mental illness that renders him psychologically incapable of competently discharging the duties of President of the United States.” So far, more than twenty thousand mental-health workers have signed the petition.