More than 100 million Americans are under severe heat warnings. And in the Northeast, five people are dead and two children are missing after flash flooding hit the Philadelphia suburbs. CBS News correspondent Lana Zak has the latest from Bucks County, Pennsylvania. Source

Chinese fast-fashion firm Shein is facing a lawsuit filed by three designers accusing the company of repeatedly stealing designs from other artists. Susan Scafidi, founder and director of Fordham University’s Fashion Law Institute, joined CBS News to talk about the case. Source

The actors of SAG-AFTRA have joined the writers of the WGA for the first tandem walkout of those film and television industry unions since 1960. Jeff Astrof, a WGA writer and producer, joined CBS News to talk about the situation. Source

Singer Elton John testified remotely Monday at Kevin Spacey’s sexual assault trial in the U.K. about Spacey’s appearance at an annual White Tie & Tiara Ball John threw with his husband. One of the alleged victims said he was driving with Spacey to the party in 2004 or 2005 when the actor grabbed his crotch. CBS News foreign correspondent Imtiaz Tyab has more on the trial. Source

Platform’s traffic has declined every month this year as changes drive users to competitors like Meta’s Threads. Source

An effort by House Democrats to expel Rep. George Santos from Congress failed earlier this year. Source

Respiratory syncytial virus is the leading cause of hospitalization in American infants. Source

Soccer superstar Lionel Messi addressed Inter Miami fans for the first time since joining the team on Sunday. Here’s what he said. Source

JetBlue and American Airlines are ending their partnership. Starting this Friday, the two airlines will no longer sell tickets on one another’s flights. A federal judge ruled in May their alliance is anti-competitive. Journalist and travel expert Scott Mayerowitz joined CBS News to talk about the change. Source

The officer’s body camera shows him running after a man, but before the officer could make contact, a driver jumped out of his pickup truck. Source