Eric Trump’s comment came as the Associated Press reported Donald Trump’s former campaign manager, Paul Manafort, will register retroactively with the Justice Department as a foreign agent, for lobbying he carried out between 2012 and 2014 on behalf of a pro-Russia Ukrainian think tank. The revelation came a day after The Washington Post reported the FBI obtained a secret FISA warrant to monitor the communications of Trump adviser Carter Page last summer, arguing Carter was acting as a Russian agent.