President Donald Trump has alleged that an FBI informant might have been a spy sent to infiltrate and undermine the Trump campaign. | Evan Vucci/AP Photo Trump declines to back Rosenstein amid FBI informant spat ‘Excuse me, I have the president of South Korea here,’ Trump said when asked about the deputy attorney general.

President Donald Trump on Tuesday declined to say whether he has confidence in Deputy Attorney General Rod Rosenstein as the Justice Department kicks off a review into the FBI’s interactions with the Trump campaign.

"Excuse me, I have the president of South Korea here,” Trump said when asked about the deputy attorney general during a joint media appearance with South Korean President Moon Jae-in, who is visiting Washington.


“He doesn't want to hear these questions, if you don't mind," Trump added.

The question came one day after Trump met with Rosenstein to discuss the president's public calls for DOJ to hand over classified documents regarding the work of an FBI informant who made contact with members of Trump's 2016 campaign.

The informant was reportedly used to gather information for the bureau's investigation into potential collusion between Trump aides and Russian officials in their attempts to meddle in the presidential race.

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But Trump and his allies have alleged that the informant might have been a spy sent to infiltrate the Trump camp and undermine the real estate mogul's White House bid.

Earlier during Tuesday's press conference, Trump said the possibility of spying into his campaign “would be one of the biggest insults that anyone has ever seen,” adding that he thinks it would violate the law.

“It would make probably every political event ever look like small potatoes,” he added.

Under pressure from Trump, the Justice Department has agreed to review the allegations of politically-motivated surveillance. The agency will also meet with White House officials and congressional leaders to review the classified information about the informant's work.

Trump and Rosenstein have long clashed over White House and congressional requests for classified information from DOJ about its Russia probe, leading to speculation that the president may fire the deputy attorney general.

"The Department of Justice is not going to be extorted,” Rosenstein declared earlier this month.