This is an opinion worth hearing. Dershowitz argues that the campaign against Sanders is politically motivated, just as the charges against Trump are politically motivated. And he warns of the danger to the republic when political leaders are charged under vague circumstances.
As an interesting side note, Dershowitz says of Bernie: “Let me be clear. I don't like Bernie Sanders. He forever disqualified himself from receiving my political support when he went to England to campaign for the anti-Semite Jeremy Corbyn; when he pushed for the appointment of Keith Ellison, who had worked with the anti-Semite Louis Farrakhan, as chair of the DNC; and when he appointed BDS supporter Cornel West to the 2016 Democratic platform committee.”