WASHINGTON (AP) — Thousands of hours of surveillance footage from the Jan. 6, 2021, attack on the U.S. Capitol are being made available to Fox News Channel host Tucker Carlson, a stunning level of access granted by House Speaker Kevin McCarthy that Democrats swiftly condemned as a “grave” breach of security with potentially far-reaching consequences.

The hard-right political commentator said his team is spending the week at the Capitol pouring through the video and preparing to reveal their findings to his viewers. But granting exclusive access to sensitive Jan. 6 security footage to such a deeply partisan figure is a highly unusual move, seen by some critics as essentially outsourcing House oversight to a TV personality who has promoted conspiracy theories about the attack.

“It’s a shocking development that brings in both political concerns but even more importantly, security concerns,” said Rep. Dan Goldman, D-N.Y., who was a chief counsel during President Donald Trump's first impeachment trial.

Many critics warn that Capitol security could be endangered if Carlson airs security footage that details how the rioters accessed the building and the routes lawmakers used to flee to safety. And a sharply partisan retelling of the Capitol attack could accelerate a dangerous rewriting of the history of what happened Jan. 6, when Trump encouraged a mob of supporters to head to the Capitol to overturn Joe Biden’s election.

“It is not lost on anyone that the one person that the speaker decides to give hours and hours of sensitive secret surveillance footage is the person who peddled a bogus documentary trying to debunk responsibility for the Jan. 6 riot from Donald Trump onto others,” Goldman said.

“Kevin McCarthy has turned over the security of the Capitol to Tucker Carlson and that’s a scary thought,” he added.

McCarthy’s office declined to confirm the arrangement, first reported by Axios, despite repeated requests for comment.

Gripping images and videos from the Capitol attack by Trump supporters have been widely circulated by documentarians, news organizations and even the rioters themselves. But officials have held back much of the surveillance video from hundreds of security cameras stationed in and around the Capitol that offer a detailed view of the grisly scene and the brutal beatings of police as they tried to stop the rioters.

The House committee investigating the Jan. 6 attack went through a painstaking process to work closely with the U.S. Capitol Police to review and ultimately release approved segments of the surveillance footage as part of its public hearings last year.

The chief of the U.S. Capitol Police, Tom Manger, issued a terse statement when asked about the new release of footage: "When Congressional Leadership or Congressional Oversight Committees ask for things like this, we must give it to them.”

House Democrats planned to convene Wednesday for a private caucus call to hear from Rep. Bennie Thompson, D-Miss., who served as the chairman of the Jan. 6 committee, and others. House Democratic leader Hakeem Jeffries called McCarthy's decision an “egregious security breach” that threatens the safety of those who work at the Capitol.

"Unfortunately, the apparent disclosure of sensitive video material is yet another example of the grave threat to the security of the American people represented by the extreme MAGA Republican majority," Jeffries, D-N.Y. said in a letter to House colleagues.

Rep. Zoe Lofgren, D-Calif., the former chairwoman of the House Administration Committee and a member of the committee that investigated Jan. 6, said: “It’s really a road map to people who might want to attack the Capitol again. It would be of huge assistance to them.”

Carlson, who previously produced a documentary suggesting the federal government used the Capitol attack by Trump’s supporters as a pretext to persecute conservatives, confirmed that his team was reviewing the footage ahead of a possible airing.

“We believe we have secured the right to see whatever we want to see,” Carlson, who is the network’s most-watched prime-time host, said on his show Monday night.

It's not clear what protocols Carlson and his team are using to view the material, but he said that “access is unfettered.”

The House committee investigating Jan. 6 underwent an often intense process to review the tens of thousands of hours of footage as it documented its findings.

Over the nearly two-year probe, the panel, which was disbanded once Republicans took control of the House, created a secure room in their Capitol Hill offices for staff to comb through the more than 14,000 hours of footage. The process took months, according to a person familiar with the investigation who requested anonymity to discuss the private machinations.

Any clip of footage the committee wanted to use for their series of public hearings or for the final report had to be approved by Capitol Police to avoid any security breaches, the person said. If police had an objection, the committee would engage in negotiations to redact any content that could potentially endanger the force or the mechanisms they use to protect the Capitol and lawmakers.

“Throughout our entire review on the committee, we worked with U.S. Capitol Police, one, to get the footage and review it through secure channels, and then we also worked with them again before we released anything," said Marcus Childress, who was the panel's investigative counsel and now is in private practice. “The purpose of that was to make sure that we weren’t releasing any sensitive surveillance footage."

Anxiety over security is running high after Capitol Police reported an uptick in threats to member safety over the last several years, its highest on Jan. 6, 2021. The number of possible threats against members of Congress rose from about 4,000 in 2017 to more than 9,600 in 2021, then declined last year to 7,501.

Key Republicans welcomed McCarthy's decision as part of his commitment to create a more transparent House and engage in oversight, as Republicans launch a far-reaching series of investigations and probes touching many aspects of government.

“I support Speaker McCarthy's decision,” said Rep. Bryan Steil, R-Wis., the chairman of the House Administration Committee.

Hard-right figures cheered the move. “For all of you that doubted we would release the tapes. Here you go!” tweeted Rep. Marjorie Taylor Greene, R-Ga., a right-flank firebrand who has become close to McCarthy.

Former Rep. Rodney Davis, R-Ill., said if House Speaker Nancy Pelosi's daughter, the documentary filmmaker Alexandra Pelosi, was able to film that day and release her footage, McCarthy should be able to grant Carlson access.

But others said the two situations are not comparable — countless hours of footage have been released from many sources that captured what happened that deadly day. A mob of Trump supporters battled Capitol Police, in often violent scenes, breaking into the building. Five people died in the riot and its aftermath.

"I think we should remember that the Jan. 6 attack happened in broad daylight," said Sandeep Prasanna, a former investigative counsel on the Jan. 6 committee now in private practice.

“My concern is that I don’t see how releasing thousands of hours of footage to one handpicked controversial media figure could ever produce the same factual and careful analysis that the committee produced over that year and a half,” he said.

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Associated Press writer Michael Balsamo contributed to this report.

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Follow the AP's coverage of the U.S. Capitol insurrection at https://apnews.com/hub/capitol-siege.

A Texas man who threatened U.S. Rep. Alexandria Ocasio-Cortez on Twitter after he stormed the U.S. Capitol on Jan. 6, 2021 was sentenced on Wednesday to more than three years in prison.

Garret Miller was wearing a shirt that read "“I Was There, Washington D.C., January 6, 2021” with a picture on President Donald Trump on it when law enforcement officers showed up at his Dallas-area home to arrest him two weeks after the riot. Miller has already served more than two years behind bars since his arrest and with credit for good behavior, he's expected to serve another eight months, according to his lawyer, F. Clinton Broden.

Miller, a 36-year-old from Richardson, was among the many rioters who thoroughly documented their actions that day in a flurry of social media posts. After Miller posted a selfie showing himself inside the Capitol, a friend wrote, “bro you got in?! Nice!” Miller replied, “just wanted to incriminate myself a little lol,” according to court papers.

On Jan. 6, he helped lead the charge as rioters removed barriers and swarmed the east front of the Capitol, prosecutors said. He was twice briefly detained by police but released and told to leave as overwhelmed officers struggled to beat back the mob, prosecutors said.

Instead of leaving, Miller went inside the Capitol, where authorities say he was aggressive toward police and ignored their commands as they tried to force him to exit. He grabbed at one officer's baton and put his hand on another as he resisted being pushed out of the Rotunda, according to prosecutors.

The night of Jan. 6, Ocasio-Cortez tweeted the word “Impeach,” and Miller responded to her on Twitter with: “Assassinate AOC." The next day, he bragged to a friend in a message that the rioters “terrified congress," prosecutors say.

Shortly after the 2020 election, he also sent a threatening message to the Instagram account of Senate Majority Leader Chuck Schumer, writing “we are coming for you," according to prosecutors. U.S. Capitol Police referred the threat to the FBI, who at that point were already investigating Miller for his Jan. 6 actions, prosecutors say. He was not charged with threatening Schumer.

Days after the riot, Miller was sharing photos of the officer he believed fatally shot Ashli Babbitt at the Capitol, prosecutors say. In a Facebook message on January 10, Miller said he and others were going to get a hold of the officer and “hug his neck with a nice rope," according to court papers.

Miller's attorney had asked the judge to impose time served, while prosecutors had sought four years in prison.

Miller's attorney said in court documents that despite his client's tweet about Ocasio-Cortez and messages about the officer, “there is no indication that he made any effort whatsoever to actually harm anybody.”

“It should be always be remembered that, although Garret is fully responsible for his individual actions that day, his actions and the actions of many others were a product of rhetoric from a cult leader that has yet to be brought to justice,” Broden said in an email Wednesday. "Garret Miller was not the name on the flag carried by those who invaded our Capitol on this dark day in our nation’s history. “

In a letter to the judge, Miller called his social media posts “disgusting and a complete embarrassment” and apologized to Ocasio-Cortez, Schumer, the officer who shot Babbitt and the other officers Miller interacted with on Jan. 6.

“I feel a deep remorse for not being helpful to police that day and aiding in destruction and pain. It was unnecessary, barbaric, and disrespectful. I was proud, arrogant, and acted in anger. I needed to be humbled” he wrote.

Miller pleaded guilty in December to charges including interfering with law enforcement during a civil disorder, assaulting, resisting or impeding officers and threatening Ocasio-Cortez.

Miller was charged separately this month in Texas federal court with one count of possession of an unregistered firearm, according to court documents. When he was arrested on the Jan. 6 charges, authorities found an AR-style rifle at his home that had been configured to fire like a machine gun.

He's among nearly 1,000 people have been charged with federal crimes related to the Jan. 6 riot and more than 500 who have pleaded guilty. About 400 rioters have been sentenced, with over half getting terms of imprisonment ranging from seven days to 10 years.

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Richer reported from Boston. Associated Press reporter Lindsay Whitehurst contributed from Washington.

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Follow the AP’s coverage of the Capitol riot at https://apnews.com/hub/capitol-siege