The president is our head of state — our chief public representative, a living symbol of the nation. However he would actually govern, Trump is simply unfit to hold this office. He called for a Muslim registry. He wants to send Syrian refugees back to Syria. He has publicly employed misogyny and has publicly enumerated lists of women with whom he would like to have sex. He has mocked the disabled. He admires Vladimir Putin. He might have ties to organized crime. From the start, his campaign has appealed to the darker angels of our nature, generating support by attacking...