Michael Pillsbury appears on the Wall Street Journal's Free Expression with Gerry Baker to discuss Pelosi’s trip to Taiwan, what more the US can do, and if there may be cracks forming within the Chinese Communist Party.

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The P4 laboratory, on the campus of the Wuhan Institute of Virology, in Wuhan, in China's central Hubei province. (Hector Retamal/AFP via Getty Images)