President Donald Trump responded to James Comey's claim that he and the Republican Party are doing "lasting damage" to the United States with their attacks on the FBI.

"How will Republicans explain this to their grandchildren?" the former FBI director wrote on Twitter on Wednesday.

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Trump turned the statement around, asking the same of Comey. 

"How is he going to explain to his grandchildren all of the lies, the deceit, all of the problems he's caused for this country?" Trump said in a "Fox & Friends" interview.

He said that of all the actions he's taken as president, his firing of Comey will go down as "a very good thing."

"[The] FBI is great. I know so many people in the FBI. The FBI is a fantastic institution, but some of the people at the top were rotten apples. James Comey was one of them," Trump said. "I’ve done a great service for this country by getting rid of him, by firing him."

Comey's critical tweets came after Trump, his legal team and some of his supporters in Congress intensified their attacks on the bureau following reports that an FBI informant had contacts with at least three members of Trump's presidential campaign.

See more of the "Fox & Friends" interview below, including Trump's thoughts on MS-13 and illegal immigration.

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