Reince Priebus was interviewed on Friday by the special counsel investigating whether the Trump campaign colluded with Russia during the 2016 U.S. election.
White House chief of staff John Kelly slapped down rumors that he was about to resign or be fired.
Republicans on Sunday urged President Donald Trump's new chief of staff John Kelly to rein in the chaos within the White House on Monday.
Trump on Friday replaced his White House chief of staff, Reince Priebus, installing retired General John Kelly in his place in a major shakeup of his top team.
A White House in crisis scrambled to allay public concern over reports that Donald Trump's son-in-law sought a secret communications link to Russia.