Michael Cohen is the central witness in the Stormy Daniels prosecution

Michael Cohen is the central witness in Democratic prosecutor Alvin Bragg ’s unabashedly partisan and legally farcical prosecution of Trump in the Stormy Daniels caper.

David Gergen : It is safe to say that it was not Cohen 's legal acumen that brought him into the New York real-estate magnate's circle.

Gergen says it's good for Trump and bad for Trump because Cohen 's creepy background makes him unreliable.

Frida Ghitis: Cohen didn't plead guilty in federal court because of campaign-finance violations.

She says he committed bank fraud in connection with a multimillion-dollar line of credit; it was the most severe offense he faced.

Ghitis says Cohen was trying to sell himself as a cooperator for the government, but he was not complicit in any of the tax- and bank-fraud schemes at issue in Cohen ’s case.

The SDNY would get Cohen , a key participant, to brand the scheme as a pair of campaign-finance felonies in which Trump was the main culprit.

The allegations would never be tested at trial because Cohen was pleading guilty.

Cohen did not get his cooperation agreement (even after upping the ante by agreeing to plead to a perjury charge in the Mueller investigation) Cohen now claims the SDNY double-crossed him.