White House Shuffle: General Kelly In, Scaramucci OutTweeting that there is "no chaos" in the White House, President Donald Trump brought in a no-nonsense retired Marine Corps general, John Kelly, as his chief of staff Monday to restore order to an administration shaken by six months of policy setbacks, personnel changes and media leaks. Within hours, White House Communications Director Anthony Scaramucci had been given his walking papers, in a sign that Kelly would assert authority in a way his predecessor Reince Priebus was unable to do as Oval Office gatekeeper.  Scaramucci's abrupt dismissal came little more than a week after he was brought in with great fanfare to head the battered White House communications shop. In his short time on the job, he threatened to fire anyone suspected of leaking information to the press and unleashed a profanity-laced rant after telephoning a reporter for The New Yorker. Scaramucci's departure was announced in a terse statement issued by Press Secretary Sarah Huckabee Sanders: "Anthony Scaramucci will be leaving his role as White House communications director. 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." A short time later, Sanders, who had been named press secretary by Scaramucci on his first day in the job, told reporters, "The president certainly felt that Anthony's comments [to The New Yorker] were inappropriate for a person in that position." Sanders said Scaramucci had been relieved of all duties in the White House, including a position with the Export-Import Bank that he held before being named communications director. 'Good move' by Kelly She also made clear that "the president has given full authority to General Kelly" to determine who has access to the Oval Office. David Cohen, a political scientist at the University of Akron who has studied the office of the chief of staff, said Kelly's first day bodes well for his mission of righting the White House ship. "If Kelly has been granted the power to hire and fire and to control access to the president, that is a good thing for the country," Cohen said, "because he can restore some discipline and restore some sanity to the chaos that is gripping the White House." On Capitol Hill, Republican Senator Susan Collins of Maine applauded the changes. "I was pleased to learn of [Scaramucci's] departure, and this shows me that General Kelly is taking firm control, and that he is not going to tolerate the kind of unacceptable behavior that Mr. Scaramucci has exhibited in just 10 days on the job. "I salute General Kelly for making this one of his earliest moves," Collins said. "I believe General Kelly will impose discipline and order on a rather chaotic and conflict-ridden White House staff. This is a good move." WATCH: Trump Talks to Media About Kelly No media source currently available Next challenge: Stopping leaks Among Kelly's biggest challenges will be stopping the leaks to reporters that have bedeviled Trump during his first six months in office, and controlling access to the Oval Office. During his six months in the job, Priebus was known to have been unable to keep a number of White House officials, including the president's daughter Ivanka Trump and son-in-law Jared Kushner, from walking in on Trump unannounced, often with the intention of influencing administration policy. News reports this week said both Kushner and Ivanka Trump had given their blessing to Kelly's selection. Akron University professor Cohen says Trump "must have a different version of reality" if he thinks there is no chaos in the White House, but he also knows he needs a strong voice to control his impulsiveness. "I think what we're going to see is, over time, the chief of staff and the president butting heads quite a bit," Cohen said. "I don't know if it'll be a relationship that will be successful in the long run." WATCH: Trump on His Hopes for Kelly No media source currently available Will Kelly last in new job? Kelly's ability to succeed ultimately depends on whether Trump gives him full authority, the political scholar added, saying: "I have grave doubts whether President Trump will be able to change his management style." Trump praised his new chief of staff Monday during a swearing-in ceremony, saying he had no doubt Kelly would be "an absolutely superb chief of staff." At a Cabinet meeting a short time later, Trump effusively praised Kelly's work as secretary of homeland security — the job the general held during the first six months of the administration. "What he has done has been nothing short of miraculous," the president exclaimed, crediting Kelly for a significant drop in illegal border crossings into the U.S. this year. "Even the president of Mexico called me," Trump said. "They said [at] their southern border, very few people are coming because they know they're not going to get through our border, which is the ultimate compliment." Scaramucci was little known to the American public before arriving on the Washington political scene in mid-July. He quickly made national headlines with his vulgar, sexually suggestive comments to The New Yorker, in which he railed against Priebus and the president's chief strategist, Stephen Bannon. VOA's Steve Herman and Ken Bredemeier contributed to this report.