When Biden met with historians last week at the White House, they compared the threat facing America to the pre-Civil War era and to pro-fascist movements before World War II President Biden paused last week, during one of the busiest stretches of his presidency, for a nearly two-hour private history lesson from a group of academics who raised alarms about the dire condition of democracy at home and abroad. The conversation during a ferocious lightning storm on Aug. 4 unfolded as a sort of Socratic dialogue between the commander in chief and a select group of scholars, who painted the...