Mary Bruce reports on the unprecedented exchange between Pres. Trump, Vice Pres. Vance and Pres. Zelenskyy in the Oval Office, which devolved into a tense shouting match, and Martha Raddatz has reactions from Moscow and key American allies; Trevor Ault has details on the preliminary tests that showed actor Gene Hackman and his wife show no signs of carbon monoxide poisoning, authorities revealed, after they were both mysteriously found dead along with one of their dogs at their home in Santa Fe,