 Airlines have canceled nearly 1,600 more flights today. Donald Trump and running mate J.D. Vance in Michigan today, holding their first rally together since the Republican National Convention. It also comes one week after the assassination attempt in Pennsylvania. More than three dozen congressional lawmakers now publicly calling for President Biden to step aside as the nominee. He's recovering from COVID, but says he'll campaign again next week. Today, Vice President Kamala Harris is on the campaign trail in Massachusetts. This is ABC News.