new york u.s. judge say inquire whether former new york city mayor rudolph giuliani former u.s. attorney general michael mukasey represent turkish gold trader charge conspire violate u.s. sanction iran u.s. district judge richard berman say hear tuesday manhattan federal court hold another hear likely late month whether conflict interest prevent two men effectively represent trader reza zarrab giuliani mukasey appear court help prepare zarrab trial benjamin brafman another zarrab lawyers say hear instead say seek diplomatic solution case two men travel turkey shortly feb. 24 meet turkish president recep tayyip erdogan giuliani ally president donald trump discuss trip advance then-u.s. attorney preet bharara bring charge zarrab brafman say mukasey confer attorney general jeff sessions one try hide involvement brafman say zarrab accuse conspire conduct illegal transactions u.s. bank behalf iran government iranian entities prosecutors say court file last week eight bank clients giuliani mukasey firm giuliani firm register agent turkey raise potential conflict brafman say response issue quite frankly none government business berman say tuesday hear unquestionably business court hear brafman argue zarrab absolute right meet anyone choose choose meet another lawyer without tell anyone would issue brafman say interview half lawyers america much hypothetical brafman joke allude zarrab hire dozen lawyers major firm dispute highlight politically charge nature case expand scope last week arrest executive turkish state-owned bank accuse conspire zarrab turkish foreign minister mevlut cavusoglu criticize arrest political zarrab dual national iran turkey previously arrest 2013 corruption probe people tie erdogan prime minister turkey u.s. judge look giuliani mukasey 's role sanction case