Senate Majority Leader Chuck Schumer and House Democratic Leader Hakeem Jeffries said in a joint statement Friday, "No one is above the law – including Donald Trump."

"This indictment must now play out through the legal process, without any outside political or ideological interference," they said. "We encourage Mr. Trump’s supporters and critics alike to let this case proceed peacefully in court.”

House Speaker Kevin McCarthy told Fox News he believes the indictment is "going to disrupt this nation because it goes to the core of equal justice for all."

"This is a very dark day in America when you think about what they're trying to indict President Trump on," McCarthy said, falsely equating the crimes Trump allegedly committed with President Joe Biden's own handling of classified documents.

McCarthy said House Republicans "are not going to stand for it," saying he’s already talked to House Oversight Chairman James Comer and House Judiciary Chairman Jim Jordan "of things that we can do to ensure equal justice."

-ABC News' Lauren Peller

Former President Donald Trump and his aide, Walt Nauta, are set to appear in court at 3 p.m. Tuesday at a federal courthouse in Miami, according to a spokesperson for special counsel Jack Smith.

The indictment was returned Thursday and unsealed on Friday, according to his office.

Trump is expected to arrive at and depart from the Miami courthouse Friday via secure private access points that would make it impossible for the public or journalists to see him.

Secret Service spokesman Anthony Guglielmi said, "While operational security precludes us from going into specifics, the Secret Service will not seek any special accommodations outside of what would be required to ensure the former President's continued safety. As with any site visited by a protectee, the Secret Service is in constant coordination with the necessary entities to ensure protective requirements are met. We have the utmost confidence in the professionalism and commitment to security shared by our law enforcement partners in Florida.

"Miami police will also help Tuesday with "personnel, resources, detours, and/or road closures," Miami Police Chief Manuel Morales said in a statement. "We're committed to protecting everyone's first amendment right and will continue to serve our residents, business owners, and visitors while maintaining the safety of our community."

Special counsel Jack Smith said Friday that he invites everyone to read the indictment "in full to understand the scope and the gravity of the crimes charged."

"The men and women of the United States intelligence community and our Armed Forces dedicate their lives to protecting our nation and its people. Our laws that protect national defense information are critical for the safety and security of the United States, and they must be enforced," he said.

"We have one set of laws in this country, and they apply to everyone," Smith said. "Applying those laws, collecting facts, that's what determines the outcome of an investigation."

The 49-page indictment against former President Donald Trump has been unsealed.

Trump has been charged with 37 counts: 31 counts of willful retention of national defense information; one count of conspiracy to obstruct justice; one count of withholding a document or record; one count of corruptly concealing a document or record; one count of concealing a document in a federal investigation; one count of scheme to conceal; and one count of false statements and representations.

The indictment alleges Trump had "lawful access to the most sensitive classified documents and national defense information gathered and owned by the United States government."

During his presidency, prosecutors said, Trump gathered classified documents and other materials in boxes, including "information regarding defense and weapons capabilities of both the United States and foreign countries; United States nuclear programs; potential vulnerabilities of the United States and its Allies to military attack; and plans for possible retaliation in response to a foreign attack. The unauthorized disclosure of these classified documents could put at risk the national security of the United States, foreign relations, the safety of the United States military, and human sources and the continued viability of sensitive intelligence collection methods."

Trump at least twice showed classified documents to others, prosecutors said, on separate occasions in 2021 at his club in Bedminster, New Jersey.

Trump aide Walt Nauta was charged with six counts: one count of conspiracy to obstruct justice; one count of withholding a document or record; one count of corruptly concealing a document or record; one count of concealing a document in a federal investigation; one count of scheme to conceal; and one count of false statements and representations.

Prosecutors described an exchange between Nauta and an unnamed member of the Trump family shortly after Nauta allegedly removed dozens of boxes from their storage location inside Trump's Florida home, Mar-a-Lago.

On May 30, 2022, prosecutors said the Trump family member texted Nauta: Good afternoon Walt, Happy Memorial Day! I saw you put boxes to Potus room. Just FYI and I will tell him as well: Not sure how many he wants to take on Friday on the plane. We will NOT have a room for them. Plane will be full with luggage. Thank you!"

Prosecutors said Nauta replied: Good Afternoon Ma’am [Smiley Face Emoji] Thank you so much. I think he wanted to pick from them. I don’t imagine him wanting to take the boxes. He told me to put them in the room and that he was going to talk to you about them."

The indictment alleges that Nauta removed about 11 boxes from the storage room on June 1, 2022.