cbs news legal analyst rikki klieman joins us to discuss. good morning to you, rikki.ig a deal -- >> good morning. >> how big a deal is this latest development? should donald trump be worried? he doesn't sound lik he is. >> yes, it is a big deal and yes, donald trump should be very worried. cy vance, the district attorney, has investigated this case with a team of prosecutors, investigators and forensic accountants for two years. for him to go to the next step of impaneling a special grand jury really means that they are looking at a possible prosecution. the question is of who or what? the trump organization, donald trump himself, his children or alan weisselberg? we need to talk about alan weisselberg. he holds the keys to the kingdom. he's the chief financial officer and the treasurer, there is no transaction that did not go through alan weisselberg. how did this all begin? michael cohen testified in congress and he said that values of properties were inflated in order to get loans, deflated in order to pay taxes. so what would the d.a. be looking at? possible charm