New White House chief of staff John Kelly was sworn in on Monday, as US President Donald Trump looked to the retired marine general for leadership in the wake of a very public staff shake-up. Kelly, 67, replaced Reince Priebus, who was forced out last week after the spectacular failure of Trump’s bid to repeal Obamacare and as an ugly in-house feud spilled into the open. “We just swore in General Kelly – he will do a spectacular job, I have no doubt, as chief of staff,” Trump said after the Oval Office ceremony. “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.” Did an ex-cheerleader just divorce her husband over 'Trump selfies'? Trump was all positives early on Monday and sought to extinguish the drama surrounding the White House, tweeting: “Highest Stock Market EVER, best economic numbers in years, unemployment lowest in 17 years, wages raising, border secure, S.C.: No WH chaos.” Highest Stock Market EVER, best economic numbers in years, unemployment lowest in 17 years, wages raising, border secure, S.C.: No WH chaos! — Donald J. Trump (@realDonaldTrump) July 31, 2017 <!--//--><![CDATA[// ><!--\n\n\n//--><!]]> Republicans are hoping Kelly, who served as Homeland Security secretary for the first six months of Trump’s presidency, will succeed in imposing discipline on a White House plagued by controversy. The chief of staff traditionally manages the president’s schedule and is the highest ranking White House employee, deciding who has access to the US leader. But many question whether anyone can rein Trump, who has appeared to encourage infighting among various factions vying for influence in his administration. Under pressure from a widening probe into his campaign’s contacts with Russia last year, Trump last week attacked his own attorney general for disloyalty , alarming his conservative base, before turning on Priebus. White House comedy distracts America from the age of automation and looming job losses In another tweet on 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 US 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?” If ObamaCare is hurting people, & it is, why shouldn't it hurt the insurance companies & why should Congress not be paying what public pays? — Donald J. Trump (@realDonaldTrump) July 31, 2017 <!--//--><![CDATA[// ><!--\n\n\n//--><!]]> Since taking office six months ago, Trump’s tumultuous administration has seen a succession of negative headlines and brewing scandals. Fuelling 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.