Bloomberg: “Kelly is testing his authority to tame Trump’s sometimes reckless tweeting habits. While Kelly isn’t vetting every presidential tweet, Trump has shown a willingness to consult with his chief of staff before hitting ‘send’ on certain missives that might cause an international uproar or lead to unwelcome distractions, according to three people familiar with the interactions. Kelly has been ‘offering a different way to say the same thing,’ the person said.”

“Trump has made it clear, however, that he reserves the right to ignore advice on tweets.”

Associated Press: “Raised voices could be heard through the thick door to the Oval Office as John Kelly — then secretary of Homeland Security — offered some tough talk to President Donald Trump. Kelly, a whip-cracking retired general who was sworn in as White House chief of staff on Monday, had demanded to speak to the president alone after Trump complained loudly that the U.S. was admitting travelers from countries such as Afghanistan, Iran and Haiti.”

“Kelly first tried to explain to Trump that the admissions were standard — some people had legitimate reasons to visit the country — but the president insisted that it was making him look bad, according to an administration official familiar with the exchange about a month ago. Kelly then demanded that other advisers leave the room so he could speak to the president frankly. Trump refused at first, but agreed when Kelly insisted. It was an early indication that Kelly, a decorated retired Marine general who served three tours in Iraq, is not afraid to stand up to his commander-in-chief.”

Associated Press: “Much of his success will depend on factors outside his control, including whether Trump’s squabbling staff is willing to put aside the rivalries that have sowed disorder in the West Wing and complicated any efforts to enact policy. But no question looms larger than this: Can Kelly do what Priebus couldn’t? Can he curb the president’s own penchant for drama and unpredictability, and his tendency to focus more on settling scores than promoting a policy agenda?”

“No other aide or adviser has been successful on that front. As a candidate — and now as president — Trump has cycled through a cast of campaign chiefs and political advisers but has remained easily distracted by his personal interests and only loosely tethered to any policy plans.”

After President Trump was presented with a ceremonial saber at the U.S. Coast Guard Academy commencement, ABC News picked up Secretary of Homeland Security John Kelly telling the president: “You can use that on the press, sir.”