A "senior official in the Trump administration" wrote an anonymous op-ed in The New York Times on Wednesday, claiming there's a "resistance" within the White House. Amateur detectives want to know who it is. There are dozens of potential culprits, but these administration officials have so far denied responsibility. Kathryn Krawczyk

Vice President Mike Pence. The vice president is "above such amateur acts," his communications director tweeted Thursday morning.

Secretary of State Mike Pompeo. The top diplomat told reporters a "disgruntled, deceptive bad actor" wrote the letter, but it wasn't him, per NBC News.

Secretary of Defense James Mattis. A Pentagon spokeswoman simply told Reuters that "it was not [Mattis'] op-ed."

National Intelligence Director Dan Coats. Despite recently criticizing Trump, neither Coats nor his "principal deputy" wrote the piece, he said in a statement.

Secretary of Housing and Urban Development Ben Carson. A spokesperson told The Guardian that Carson isn't responsible.

Secretary of Homeland Security Kirstjen Nielsen. This "political attack" is beneath her, a spokesperson told NBC News.

Secretary of the Treasury Steven Mnuchin. "It is laughable to think this could come from the secretary," Mnuchin's public affairs assistant tweeted.

Office of Management and Budget Director Mick Mulvaney. Not him, a spokesperson told NBC News.

Secretary of Energy Rick Perry. "Hiding behind anonymity and smearing the president ... makes you a coward," Perry tweeted.

Ambassador to Russia John Huntsman. His time spent communicating with Moscow taught him to "never send an anonymous op-ed," a spokesperson says.

First Lady Melania Trump. Whoever wrote it is "sabotaging this country," she told CNN.

White House Counsel Don McGahn. He'll be leaving the White House soon, but still didn't write it, per CNN.

Secretary of Labor Alex Acosta. He "does not play these sophomoric Washington games," a spokesperson said.

Secretary of Veterans Affairs Robert Wilkie. It's not him "nor anyone else at the VA," a spokesperson told CNN.

Secretary of Commerce Wilbur Ross. He tweeted that he's "thoroughly appalled" by it.

Small Business Administration Administrator Linda McMahon. Nope, she tweeted.

Secretary of Health and Human Services Alex Azar. Nah, per The Guardian.

CIA Director Gina Haspel. A spokesperson told NBC News: "No!"

Ambassador to the United Nations Nikki Haley. No, she told CNN.

Acting EPA Administrator Andrew Wheeler. "That's a no," a spokesman said.

Secretary of Transportation Elaine Chao. "For those who have inquired," no, a spokeswoman told CNN.

Secretary of Education Betsy DeVos. She "does not play Washington insider games," the department's press secretary tweeted.

U.S. Trade Representative Robert Lighthizer. It's a "complete and total fabrication," he said in a statement to CNN.

White House counselor Kellyanne Conway. "Of course not," she told NBC News.

Attorney General Jeff Sessions. Even Trump's public enemy is a no, a spokesperson told CNN.

National Security Agency Director Paul Nakasone. Not him, per an NSA tweet.

This list has been updated as more officials have denied responsibility.

Brayden Harrington has found the confidence to speak up — and he hopes to inspire other kids like him who stutter.

Harrington, 13, met President Biden last February during a campaign stop in New Hampshire. Biden grew up with a stutter, and he offered Harrington some advice: "Don't let it define you. You are smart as hell." Harrington and Biden remained in touch, with the teen speaking at the Democratic National Convention and again during Wednesday's Celebrating America inaugural special, when he delivered the iconic line: "Ask not what your country can do for you — ask what you can do for your country."

Harrington will soon share his story in a picture book, Brayden Speaks Up, set to be published on Aug. 10. It won't be his only book — next year, Harrington will release a second title for older kids. In a statement, Harrington said he was "so nervous" during his speech at the Democratic National Convention, but "what got me through and helped motivate me was knowing I could be a voice for other children who stutter as well as anyone else who has faced challenges. I only hope my story provides a little extra support and motivation for those that need it." Catherine Garcia

Former Presidents Barack Obama, George W. Bush, and Bill Clinton on Wednesday encouraged Americans to reach out to friends and family members who don't necessarily agree with their political beliefs, saying this is an important step in getting the country to heal.

During a taped message that aired during the "Celebrating America" inaugural special, Bush said he thinks "the fact that the three of us are standing here talking about a peaceful transfer of power speaks to the institutional integrity of our country."

Obama agreed, saying that Americans have to "not just listen to folks we agree with, but listen to folks we don't. One of my fondest memories of my inauguration was the grace and generosity that President Bush showed me and Laura Bush showed Michelle. It was a reminder that we can have fierce disagreements and yet recognize each other's common humanity, and as Americans we have more in common than what separates us."

Bush implored viewers to "love their neighbor like they'd like to be loved themselves," as that would cause "a lot of division in our society" to end. With President Biden now in office, it's "a new beginning," Clinton said, adding that the first step to unity is everyone getting off their "high horse" and reaching out to friends and neighbors.

The three former presidents also delivered messages to Biden, with Bush saying he is "pulling for your success. Your success is our country's success." Clinton said he is "glad" Biden is in the White House, and "we're ready to march with you." Obama told his former vice president he is "proud" and wants him to know that the trio is "rooting" for him and "will be available in any ways that we can as citizens to help you guide our country forward. We wish you Godspeed." Catherine Garcia

One of former President Donald Trump's last acts in office was issuing a directive extending free Secret Service protection to his four adult children and two of their spouses for the next six months, three people with knowledge of the matter told The Washington Post.

It's not just his adult children benefiting — Trump also directed that former Treasury Secretary Steven Mnuchin, former White House Chief of Staff Mark Meadows, and former National Security Adviser Robert O'Brien continue to receive Secret Service protection for six months, two people familiar with the matter told the Post. This 24-hour security, funded by taxpayer money, is expected to cost millions.

Under federal law, only Trump, former first lady Melania Trump, and their 14-year-old son, Barron, are entitled to Secret Service protection now that they have left the White House; while Donald and Melania can receive protection for the rest of their lives, Barron is only entitled to it up until his 16th birthday.

The Post notes that presidents have the ability to order Secret Service protection for anyone they want, but it is extremely unusual for an outgoing president to order this type of security for their children who are well into adulthood. It is also unclear if there is precedent for ordering security for former aides. Former Presidents Bill Clinton and George W. Bush requested security extensions for their daughters, who were in college when their presidencies ended. Once former President Barack Obama was out of office, his daughters — one in high school, the other on a gap year from college — received a short extension of security.

During Trump's presidency, his adult children took more than 4,500 trips, including vacations and business travel for the Trump Organization, the Post reports. Taxpayers paid millions of dollars for Secret Service agents to accompany them on those jaunts. Catherine Garcia

President Biden and Vice President Kamala Harris' inauguration celebrations ended with a bang.

To cap off the 90-minute "Celebrating America" inaugural special on Wednesday night, Katy Perry sang her hit "Firework," as pyrotechnics exploded behind her, lighting up Washington, D.C.

Biden, first lady Dr. Jill Biden, and their family watched the show from the White House, while Harris and her husband, Doug Emhoff, took it all in from the Lincoln Memorial. Catherine Garcia

President Biden addressed the nation during the "Celebrating America" inaugural special Wednesday night, saying that to "overcome the challenges in front of us," the country must find "the most elusive of all things in a democracy: Unity."

Speaking from the Lincoln Memorial, Biden said the United States has learned that "democracy is precious, and because of you, democracy has prevailed." Americans are "good people," Biden said, and he called on the country to unite in favor of "opportunity, liberty, dignity, and respect" and against "common foes" like "hate, violence, disease, and hopelessness."

The only way the U.S can "get through the darkness around us" is by coming together, Biden said. There are moments, like the Civil War, when "more is asked of us Americans," he added. "We are in one of those moments now. The pandemic, economic crisis, racial injustice, the climate crisis, and threats to our very democracy. The question is: Are we up for it?"

Biden said he has no doubt that people will unite, adding, "You the American people are the reason why I've never been more optimistic about America than I am this very day. There isn't anything we can't do if we do it together." Catherine Garcia

The Senate on Wednesday evening voted 84-10 to confirm Avril Haines as director of national intelligence.

Haines is the first woman to serve as head of the intelligence community, and is also the first member of President Biden's Cabinet to receive Senate confirmation. She served as deputy national security adviser and deputy CIA director in the Obama administration.

During her confirmation hearing on Tuesday, Haines said "when it comes to intelligence, there is simply no place for politics, ever." After Biden announced in November that he wanted Haines to serve as director of national intelligence, Haines declared she would "speak truth to power" and knew Biden valued "the perspective of the intelligence community." Catherine Garcia