President Donald Trump will nominate State Department spokeswoman, Heather Nauert, as USA ambassador to the United Nations, two White House officials have said.
The state department has made no comment.
Since mid-October, she had rarely been seen by reporters at the State Department as Palladino took the lead.
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Nauert, 48, previously worked as a host at both Fox News and ABC News before joining the State Department, where she has worked very close under Secretary Mike Pompeo on the road. The officials were not authorized to speak publicly before Trump's announcement.
Ms Nauert, whose nomination would require Senate confirmation, is a former Fox News Channel correspondent and anchor.
Nauert's appointment was first reported by Bloomberg.
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It added that in return China agreed to buy a "very substantial" amount of agricultural, energy, industrial and other products. His tariff campaign against the country began in January 2018, and saw a 25 per cent tariff on steel imports imposed in March.
Ms Nauert is described by U.S. media as an "unorthodox choice" for the role due to her little experience in government or foreign policy.
Heather Nauert, who earlier this year had been considered a possible successor to White House spokeswoman, Sarah Sanders, gained experience on diplomacy by working at the State Department, but she lacks the political and policy credentials of Ms Haley, who is a former governor of SC.
The post is considered one of the highest profile positions in US diplomacy. Chris Murphy (D-CT) bashed Nauert as lacking in expertise, believing her to be the wrong choice for President Donald Trump's administration. She would assume the position at a time when the United Nations is dealing with such issues as the North Korea nuclear deal, the ongoing war and humanitarian crisis in Yemen, and climate change.
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Bob Menendez of New Jersey, the top Democrat on the Senate Foreign Relations Committee, called Haspel's absence "a cover-up". The Senate voted 63-37 to pass the procedural vote, which will set up a floor debate on the resolution next week.
White House press secretary Sarah Huckabee Sanders described Nauert in March as "a team player" and "a strong asset for the administration". With a master's degree from Columbia University's Graduate School of Journalism, she had come to Fox from ABC News, where she was a general assignment reporter.A graduate of Keith Country Day School in Rockford, Nauert is the daughter of the late Peter W. Nauert who led Pioneer Life Insurance Co. of IL.