President Donald Trump appeared to grow frustrated with reporters for peppering him with questions Tuesday about Deputy Attorney General Rod Rosenstein at an appearance alongside South Korean President Moon Jae-in at the White House.

"Do you have confidence in Rod Rosenstein?" ABC News reporter Karen Travers asked.

"What's your next question, please?" Trump responded. "I have the president of South Korea here. He doesn't want to hear these questions, if you don't mind."

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Trump on Monday met with Rosenstein and FBI Director Christopher Wray, one day after demanding a DOJ investigation into whether the FBI “infiltrated or surveilled” his campaign.

Asked about the meeting before the testy exchange, Trump reiterated that "if they had spies in my campaign that would be a disgrace to this country."

Trump made the investigation demand following reports detailing how an FBI “informant” had multiple contacts with members of his campaign. He said he would formally seek a DOJ probe of whether agents surveilled the campaign for political purposes, and whether any such demands came from the Obama administration.

Within hours of the demand, the DOJ had asked the department’s inspector general to handle such a review.

Rosenstein said in a Sunday statement: “If anyone did infiltrate or surveil participants in a presidential campaign for inappropriate purposes, we need to know about it and take appropriate action."

Moon is in D.C. for talks on how to move forward after North Korea threatened to cancel the face-to-face talks between Trump and Kim Jong Un. Trump said Tuesday the planned June 12 summit "may not happen."

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