Clinton campaign manager's brother steps down from lobbying firm amid Mueller investigation

He's a top Democratic lobbyist and his brother ran Clinton's campaign.

"The Podesta Group has fully cooperated with the special counsel’s office and taken every possible step to provide documentation that confirms compliance with the law," a spokesperson for the Podesta Group told ABC News.

The spokesperson told ABC News that the Podesta Group "filed the appropriate public disclosures of its representation" of the nonprofit group called the European Centre for a Modern Ukraine in 2012.

How investigators with the special counsel’s office are viewing Podesta’s role in the investigation remains unclear. But The Washington Post reported Monday that Podesta told his firm’s employees that it was “impossible to run a public affairs firm while you are under attack by Fox News and the right-wing media.”