A top aide of the Trump administration is leaving her post as deputy chief of staff - just three months in.
Katie Walsh is moving to a pro-Trump group called America First Policies and will work as a senior advisor.
It is reported she decided to join the group after the Trump-backed health care bill failed to amass enough support last week.
According to Associated Press, White House officials said legislators were being pressured by outside groups that opposed the bill, with no push-back from existing Trump organisations.
"It was abundantly clear that we didn't have air cover when it came to calls coming into lawmakers," said White House chief of staff Reince Priebus.
"No one can fix this problem better than Katie."
Katie Walsh was previously Reince Priebus’ chief of staff at the Republican National Committee.
Top White House officials, including Reince Preibus, Jared Kushner and Steve Bannon, all told reporters after the announcement that Walsh had not been pushed out, but that her work with America First Policies would be important.
Walsh's fiancé also commented on the departure, writing on Twitter;
"Yes-Katie asked to provide badly needed air cover for the President’s agenda, per Reince/Bannon/Jared! Will work with @AmericaFirstPol."