letter, he will not be able to discuss things under investigation. that's under the purview of the district of new york, federal prosecutors in that district as well as robert mueller's investigation looking into special counsel, looking into russian interference in the election as well as what the attorney general of the state of new york is looking into. what can he actually testify to? that is a big question. except for this letter from gener general. many. in fact, according to davis, cohen's testimony will be circumstance um scribed according to what you andly, this is in reference to him