BULLETIN:  AT 5:50 P.M. ET:  Reince Priebus is out as White House chief of staff, to be replaced Monday by retired Marine General John Kelly, the secretary of homeland security.  From ABC News: 

President Donald Trump has named Ret. Gen. John Kelly as the new White House chief of staff, replacing Reince Priebus in the role.

"I am pleased to inform you that I have just named General/Secretary John F Kelly as White House Chief of Staff. He is a Great American and a Great Leader. John has also done a spectacular job at Homeland Security. He has been a true star of my Administration," Trump said in a series of tweets Friday afternoon. 

And...

After walking off Air Force One at Joint Base Andrews in Maryland, Trump briefly spoke to reporters.

"Reince is a good man. John Kelly will do a fantastic job. General Kelly has been a star. Done an incredible job thus far. Respected by everybody. A great, great American. Respected by everybody. Reince Priebus [is] a good man," Trump said.

The personnel shift came amid growing acrimony inside the White House, which was made public most clearly when new communications director Anthony Scaramucci called a reporter for The New Yorker and gave a series of expletive-ridden criticisms of Priebus, among others.

COMMENT:  Kelly has a superb reputation.  Maybe he can bring out the best in Trump and repress the worst.  But he comes into office with great prestige and a military background.

No definitive word yet on whether Priebus resigned, was fired, or was gently eased out.

Now the White House will get even more interesting.

July 28, 2017