The time has come to say it: there is something psychologically wrong with the President. The fuzzy outlines of President Trump's likely mental illness came into sharper focus this week: in two interviews with major networks, he revealed paranoia and delusion; he quadruple-downed on his fabrication that millions of people voted illegally, which demonstrated he is disconnected from reality itself; his petulant trade war with Mexico reveals that he values self-image even over national interest; his fixation with inaugural crowd size reveals a childish need for attention. Partisans have been warning about Trump's craziness for months, but rhetoric from political...