President Trump Defends North Korea After Missile Tests; Interview With New York City Mayor Bill de Blasio; Interview With Sen. Joni Ernst (R-IA); Trump, Abe Visit To Include Talks On Trade And North Korea; President Trump Plays Down North Korea's Missile Test; More Democrats Are Starting To Call For Impeachment; Buttigieg To Democrats, Don't Vote For Who You Think Is Less Risky; New Poll Shows Sanders Still Second But Support Slipping; Warren And Harris See Favorability Increases; Record Number Of Black Female Cadets Graduate West Point. Aired 9-10a ET