Former White House adviser Steve Bannon says there has not been a more destructive presidency than George W. Bush’s. Bannon delivered a scathing criticism of the former president after Bush this week denounced bigotry in Trump-era American politics, warning that the rise of “nativism,” isolationism and conspiracy theories have clouded the nation’s true identity. Bannon told a capacity crowd at a California Republican convention in Anaheim that Bush “embarrassed himself.” In his remarks in New York, Bush warned of a nation in which discourse has been degraded by “casual cruelty,” where bigotry is emboldened. Bannon says Bush has no idea...