The latest details from the DNC and Trump's USPS saga

On Night 2 of the Democratic National Convention, delegates will officially nominate former Vice President Joe Biden as their 2020 presidential candidate. Meanwhile, new developments in the ongoing saga over the U.S. Postal Service, with the postmaster general delaying some policy moves and President Trump saying he wants to add funding. Judy Woodruff talks to Lisa Desjardins and Yamiche Alcindor.