Marie Yovanovitch, testifying in Trump hearings, explains her gratitude for US, empathy for downtrodden people; recalls her mother 'grew up stateless in Nazi Germany'

Career diplomat Marie Yovanovitch describes with outrage the 'smear campaign' against her in testimony as Trump attacks her on Twitter

As Marie Yovanovitch gives public testimony in probe, Trump tweets against her, says everywhere she went 'turned bad'

Democrats say House session revealed a US president abusing his office for political gain, while Republicans insist that witnesses gave testimony that was secondhand at best