9 AM ET: Secret Service's responsibility, Musk leaving California, Paris Mayor Seine swim & more

CNN 5 Things

As onetime critics and rivals of former President Donald Trump pledge unity at the RNC, the Secret Service is shedding light on the security lapse that led to his assassination attempt. A group of Democrats want to slow down the confirmation of President Joe Biden as their nominee. Extreme heat is breaking records in hundreds of US cities this summer. Elon Musk says he's moving two of his companies out of California - we'll tell you why. Plus, the Mayor of Paris has jumped into the river Seine to prove it's safe ahead of the Olympics, and our reporter joined her.

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