In its investigation of the Trump Organization’s financial affairs, the Manhattan district attorney’s office has zeroed in on Allen Weisselberg, the company’s former finance chief, who spent almost half a century working for the Trump family. Criminal charges have been brought against Mr. Weisselberg in the hopes of getting him to cooperate in an investigation of former President Donald Trump. Will he flip? Guest: Ben Protess, an investigative reporter for The New York Times; and Michael Rothfeld, an investigative reporter for The Times’s Metro Desk.