When asked about the indictment during an event in North Carolina on Friday, President Joe Biden told reporters, "I have no comment at all."

Biden didn't respond to questions on if he’s spoken to Attorney General Merrick Garland or if he had a response to comments from Republicans.

Walt Nauta, an aide to former President Donald Trump, has been charged by the special counsel as part of the probe into Trump’s taking of classified information, ABC News has learned.

Nauta was indicted by the same grand jury in Florida, sources told ABC News. It is not immediately clear what the exact charges are and an attorney for Nauta declined to comment when contacted by ABC News.

Nauta served as a valet in the Trump White House and left his role to join Trump as a personal aide in early 2021.

Trump praised Nauta in a Truth Social post, writing that he was a Navy veteran "who served proudly with me in the White House, retired as Senior Chief, and then transitioned into private life as a personal aide."

"He has done a fantastic job!" Trump said.

-ABC News' Katherine Faulders, Jack Date and John Santucci

In the wake of the indictment, two of former President Donald Trump's lawyers have submitted their resignations.

Jim Trusty and John Rowley said they were stepping down in a joint statement.

"This morning we tendered our resignations as counsel to President Trump, and we will no longer represent him on either the indicted case or the January 6 investigation," they wrote.

Trump, meanwhile, claimed Friday that he had removed two of his attorneys representing him in the documents probe and "will be announcing additional lawyers in the coming days."

"I want to thank Jim Trusty and John Rowley for their work," Trump said on Truth Social, "but they were up against a very dishonest, corrupt, evil, and 'sick' group of people, the likes of which has not been seen before."

Trump said he will be represented in the case by Todd Blanche, who attended Manhattan criminal court with the former president in April, and "a firm to be named later."

-ABC News' Olivia Rubin

Sen. Mitt Romney, R-Utah, said in a statement Friday that Donald Trump "brought these charges upon himself by not only taking classified documents, but by refusing to simply return them when given numerous opportunities to do so."

"These allegations are serious and if proven, would be consistent with his other actions offensive to the national interest, such as withholding defensive weapons from Ukraine for political reasons and failing to defend the Capitol from violent attack and insurrection," Romney said.

The senator added that he thinks it appears "the Justice Department and special counsel have exercised due care" and offered Trump "time and opportunity to avoid charges that would not generally have been afforded to others."

Preparations are underway in Miami ahead of former President Donald Trump's Tuesday appearance in federal court, city officials said at a news conference Monday.

"We are working very closely with our federal, state and local partners to make sure we have a comprehensive approach" to maintain "peace and order," but also to allow people the right to express themselves, Miami Police Chief Manuel Morales said.

Miami Mayor Francis Suarez encouraged any demonstrators to be peaceful, adding that officials are prepared for large crowds outside the courthouse.