As nativism, xenophobia, vile racism, and assaults on the rule of law threaten the very fabric of our nation, The Corrosion of Conservatism presents an urgent defense of American democracy. Pronouncing Mexican immigrants to be "rapists," Donald Trump announced his 2015 presidential bid, causing Max Boot to think he was watching a dystopian science-fiction movie. The respected conservative historian couldn't fathom that the party of Lincoln,...