First: "A convicted criminal who's only out for himself." That's how the Biden campaign is labeling Donald Trump in a new ad as the current president leans into attacking the former president for his 34 felony convictions.  Plus: Who wants to be a running mate? Countless Republicans are vying to be on the ticket with Donald Trump, but only one contender was chosen as the favorite at a conservative conference this weekend.  And: The surgeon general is warning that the threat of social media to children is so dire that it needs a warning label just like cigarettes and alcohol.  Learn more about your ad choices. Visit podcastchoices.com/adchoices