White House chief of staff says he is not so frustrated he wants to leave

"Although I read it all the time, pretty consistently ... I'm not quitting today. I don't believe, and I just talked to the president, I don't think I'm being fired today," Kelly quipped during a surprise appearance in the White House briefing room.

"I'm not so frustrated in this job that I'm thinking of leaving," he said, adding the job was the hardest and most important job he had ever had.

(Reporting by Jeff Mason and Steve Holland; Editing by Chizu Nomiyama)