Monday, May 10, 2021: A Cybersecurity Test for the Biden Administration

The White House says they're investigating a cyberattack that resulted in the shutdown of a major U.S. pipeline, including the attackers' potential Russian ties.

Plus, a Republican congressman accuses House GOP Leader Kevin McCarthy of downplaying warnings of violence days before January 6th.

And while the U.S. covid-19 cases continue to decline, several states aren't ordering their full allocations of vaccine doses due to dropping demand.

On today's show: CNN's Kaitlan Collins, Manu Raju, and Elizabeth Cohen. Also on the program: Jackie Kucinich with the Daily Beast, Dr. Michael Smith with Duke University, and CNN National Security Analyst Juliette Kayyem.

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