White House communications director Anthony Scaramucci was forced out Monday after barely 10 days in his post, as Donald Trump's new chief of staff asserted his authority on his first day in office.

John Kelly, who had served as Trump's secretary of homeland security for six months, has been brought in as chief of staff to bring order and discipline to a White House beset by scandal, infighting, low approval ratings and legislative defeats.

After an Oval Office swearing-in ceremony, Trump confidently predicted the 67-year-old combat veteran -- one of a group Trump has dubbed "my generals" -- will do a "spectacular job."

And Kelly got straight to work, as reports emerged that Trump dismissed Scaramucci -- the fast-talking New York financier -- at Kelly's request.

"Mr Scaramucci felt it was best to give Chief of Staff John Kelly a clean slate and the ability to build his own team. We wish him all the best," the White House said in a terse statement.

Scaramucci had courted controversy with an expletive-laden attack on his colleagues -- then chief of staff Reince Priebus, who was forced out last week, and chief White House strategist Steve Bannon.

According to the U.S. press, Ivanka Trump, the so-called "Barbie" or "the Iron Lady," told Donald Trump that Scaramucci had to be fired. Melania Trump was also disturbed by Scaramucci's rhetoric and abusive expressions, the reports suggested.

President Donald Trump's spokeswoman Sarah Huckabee Sanders clarified why Trump's new White House communications director, Anthony Scaramucci, was let go from his job only 10 days after being appointed.

Sanders said the president believes Scaramucci's recent off-color remarks to The New Yorker were "inappropriate." She said Scaramucci will not have a position in the administration.

"What matters most to us is not who is employed at the White House but who is employed in the rest of the country, " Sanders said. She also stated that the new chief of staff John Kelly will have "full authority" to bring structure and discipline to the White House. Trump ousted his White House chief of staff Reince Priebus last Friday, in a major shake-up of his top staff.

Asked about reports that Trump was considering moving Sessions to the Department of Homeland Security, White House spokeswoman Sarah Huckabee Sanders was clear.

"There are no conversations about any Cabinet members moving in any capacity," she said, adding that Trump "has 100 percent confidence in all members of his Cabinet."

The Attorney General Jeff Sessions traveled to the White House on Monday to participate in first full Cabinet meeting under Kelly's tenure. It was one of several visits he's paid in recent weeks. Simmering tensions between President Donald Trump and his attorney general appear to be cooling down. The White House said Monday that Trump has "100 percent" confidence in his Cabinet, including Attorney General Jeff Sessions. Trump has publicly belittled Sessions in in recent weeks, calling him "weak" and "beleaguered" in retaliation for Sessions' decision to step aside from the federal investigation into Russia's meddling in the 2016 election and potential ties between Trump campaign aides and Russian officials. Sessions was one of Trump's earliest supporters, and the two bonded over their shared commitment to cracking down on illegal immigration.

After being fired as President Donald Trump's communications director, Scramucci was also mistakenly listed as dead in Harvard Law School's alumni directory. The directory mail to alumni this week had an asterisk next to Scaramucci's name, indicating he had died, the Washington Post and CBS News reported on Monday. The 53-year-old New York financier is a 1989 graduate of the Ivy League law school. Harvard Law School acknowledged the directory error in a statement and apologized to Scaramucci.

"The error will be corrected in subsequent editions," the school said. It gave no explanation of how the mistake occurred. The directory is published every five years and is available only to alumni, CBS said. Scaramucci did not respond to an emailed request for comment.

'Record-shattering'

Kelly inherits the day-to-day running of a White House staff that -- far from marching in lockstep -- look like a regiment pinned down by heavy fire, getting conflicting orders from their commander and squabbling over the way forward.

"I predict that General Kelly will go down as, in terms of the position of chief of staff, one of the great(est) ever," Trump said.

"What he has done in terms of homeland security is record-shattering, if you look at the border, if you look at the tremendous results we've had."

Kelly replaces Priebus, a Republican Party operative who was ousted last week after the spectacular failure of Trump's bid to repeal Obamacare and as his ugly feud with Scaramucci spilled into the open.

The chief of staff is the highest ranking White House employee -- a chief operating officer who organizes staff, manages the president's schedule and decides who gets access to him and when.

That is no small mission in Trump's White House, where a rotating cast of family and staff with unclear roles and opaque job titles walk into the Oval Office seemingly at will.

Many question whether anyone can rein in the mercurial, Twitter-happy Trump, who has appeared to encourage the infighting among various factions vying for influence in his administration.

No chaos

Trump -- ever determined to project success -- insisted Monday that there was no "chaos" at the White House, which was instead running as a finely tuned machine.

"I think we're doing incredibly well. The economy is doing incredibly well, and many other things. So we're starting from a really good base," he told a cabinet meeting.

"We have the highest stock market in history," Trump said, adding that U.S. economic growth in the last quarter stood at 2.6 percent and was approaching the three percent target he once set.

"Unemployment is the lowest it's been in 17 years. Business enthusiasm is about as high as they've ever seen it."

But aside from the economy, there has been little reason for Trump to cheer.

Under pressure from a widening probe into his campaign's contacts with Russia last year, Trump last week attacked his own attorney general Jeff Sessions for disloyalty, alarming his conservative base, before turning on Priebus.

In another tweet Monday, Trump hinted that Congress's own health insurance plan should be replaced for its failure to repeal Obamacare, his predecessor's signature reform of the U.S. health care system.

"If Obamacare is hurting people & it is, why shouldn't it hurt the insurance companies and why should Congress not be paying what public pays?"

Since taking office six months ago, Trump's tumultuous administration has seen a succession of negative headlines and brewing scandals.

Fueling the fire, the billionaire Republican has parted with a number of top officials including his national security advisor, deputy national security advisor and FBI director, among others -- an unparalleled turnover for such a young presidency.

On the global stage, Trump faces the stark challenge of a North Korea that could be on the verge of marrying nuclear and ballistic missile technology.

"We'll handle North Korea. We're going to be able to handle them. It will be handled. We handle everything. Thank you very much," Trump said.

Kelly's arrival is likely to signal a renewed focus on border security and immigration.

"As the coils of the Russia investigation grow tighter, as his failures in Congress mount, Trump reaches for what he knows --demagoguery of the rawest sort," predicted Eliot Cohen, a former State Department official once tipped to join the Trump White House.

"Trump will remain Trump, and the various denizens of the White House are unlikely to treat Kelly with much more deference than they treat one another," he wrote in the Atlantic magazine.