 Former President Trump calls for unity on the last night of the Republican National Convention, while President Biden digs in his heels as more Democrats call for him to leave the race. We'll talk about the contrasting picture with The New York Times. That's coming up at 315. Not looking good on Wall Street today. The Dow is down 370 points. Three o'clock. This is CBS News on the Hour, sponsored by Dr. Marty's Nature's Blend dog food. I'm Stacey Levine.