Reporter: Questions about the political pressure FDA was under

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    President Donald Trump announced an emergency use authorization for the use of convalescent plasma to treat Covid-19, calling it a “historic breakthrough.” CNN’s Jeremy Diamond reports conclusions haven’t been made on the treatment just yet.

    President Donald Trump announced an emergency use authorization for the use of convalescent plasma to treat Covid-19, calling it a “historic breakthrough.” CNN’s Jeremy Diamond reports conclusions haven’t been made on the treatment just yet.