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At a press briefing on Thursday, White House Chief of Staff John Kelly addressed reports that he's close to resigning his post or being fired by President Donald Trump.

"I'm not quitting today," Kelly said. "I don't think I'm being fired today. And I am not so frustrated in this job that I am thinking of leaving."

Kelly said it's the hardest job he's ever had, in addition to the most important job he's ever had.

"Unless things change, I'm not quitting, I'm not getting fired. And I don't think I'll fire anyone tomorrow," Kelly said.

Fox News' John Roberts asked Kelly if he is frustrated in his position.

"No, I'm not frustrated," Kelly said. "This is really, really hard work, running the United States of America. I don't run it, but I'm working for someone who is dedicated to serving the country in a way that he's talked about for a number of years."

He later blasted the coverage of the Trump administration, chiding the press to get some "better sources."

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