washington prominent washington lobbyist tony podesta step lobby firm podesta group investigators examine company tie u.s. president donald trump indict former campaign manager source familiar matter say monday podesta step day federal investigators probe russian interference 2016 u.s. election campaign charge former trump campaign manager paul manafort business associate rick gate money launder manafort longtime republican operative gate plead guilty 12-count indictment charge range money launder act unregistered agents ukraine former pro-russian government indictment manafort gate list two unnamed firm company company lobby several lawmakers behalf ukraine manafort request indictment name podesta group spokesperson podesta group say podesta step monday contact investigators special counsel robert mueller team fully cooperate probe spokesperson also say podesta group fully comply law disclose lobby behalf european centre modern ukraine group link manafort name indictment podesta group file lobby disclosures department justice april august say work 2012 pro-russian ukrainian group manafort work podesta group work alongside another washington lobby firm mercury llc also say monday cooperate mueller team charge file anyone podesta group mercury tony podesta respond request comment monday podesta head firm bore name 10.7 million lobby first nine months 2017 accord disclosures firm file u.s. congress brother john podesta serve chairman presidential campaign democratic candidate hillary clinton senior white house adviser democratic former president barack obama mueller team investigate allege russian meddle 2016 campaign neither trump campaign mention indictment manafort gate podesta group see mainly democratic lobby firm mercury view mainly republican shop mercury subsidiary omnicom group public relations work addition lobby omnicom reply request comment podesta list lobbyist several firm large account include well fargo lockheed martin oracle wal-mart textron general dynamics well fargo wal-mart oracle general dynamic lockheed martin decline comment textron respond request comment u.s. lobbyist tony podesta leave firm amid manafort probe