"Tonight Jon Lerner informed the Vice President that he was withdrawing from coming on board as National Security Adviser and the Vice President accepted his decision," CNN quoted Alyssa Farah, Pence's press secretary, as saying after the withdrawal on Sunday night.
A Republican source told CNN that the news of Lerner's hiring by Pence had created "a big damn mess".
Earlier on Sunday, Axios news reported that President Donald Trump attempted to block Pence from hiring Lerner because of his "never Trump" views.
He had intended to continue working with Haley while advising Pence.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)