Amanpour: Nathalie Loiseau, Ezra Klein, Michael Osterholm and Selina Wang

Nathalie Loiseau, French Member of European Parliament, joins Christiane Amanpour to discuss President Macron's tough new covid health pass. Then Ezra Klein, opinion columnist for The New York Times and host of "The Ezra Klein Show", talks about the challenges of getting all eligible Americans vaccinated. Our Walter Isaacson speaks to Michael Osterholm, Director at the Center for Infectious Disease Research & Policy at the University of Minnesota, about the science behind the Delta variant and what the U.S. can learn from other countries' responses. And finally, CNN's Selina Wang reflects on Simone Biles' return to competition and whether the success of Japanese athletes is softening resistance to the Games.

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