The first to go is expected to be the deputy national security adviser, Mira Ricardel, who has clashed with First Lady Melania Trump. Mr. Trump is also leaning toward the ouster of Homeland Security Secretary Kirstjen Nielsen, who is a close ally of Mr. Kelly, White House officials said. The president has decided to replace Ms. Nielsen, but hasn’t finalized the timing, White House officials said, in part because there isn’t an obvious candidate to replace her.Mr. Trump has told aides that he is aware that forcing out Ms. Nielsen may result in Mr. Kelly quitting, administration officials said. Mr. Trump has told these aides that he is resigned to the possibility of Mr. Kelly leaving, and that he probably will replace Mr. Kelly with Nick Ayers, who is currently chief of staff to Vice President Mike Pence... The president often games out multiple staffing scenarios with advisers, including months of talking about whether to replace Mr. Kelly. While those discussions often signal impending changes, that is not always the case.“This is how the president works,” one White House official said. “He’s doused a bunch of people in gasoline and he’s waiting for someone to light a match.”
.. A rift emerged after Mrs. Trump staff’s battled with Ms. Ricardel during the first lady’s trip to Africa last month over seating on the plane and requests to use National Security Council resources, according to people familiar with the matter. The first lady’s team also told Mr. Trump that they suspect Ms. Ricardel is behind some negative stories about Mrs. Trump and her staff.
The first lady’s office issued a statement on Tuesday calling for Ms. Ricardel to be dismissed. “It is the position of the Office of the First Lady that she no longer deserves the honor of serving in this White House,” said Stephanie Grisham, a spokeswoman for Mrs. Trump.
.. Late Tuesday, one White House official pushed back against the criticism but offered no assurances about Ms. Ricardel’s job security.
“Mira Ricardel is one of the highest ranking women in the Trump administration,” the official said. And she “has never met the first lady.”
Ms. Ricardel also repeatedly clashed with Defense Secretary Jim Mattis and his Pentagon team over staffing decisions and policy differences, according to people familiar with the feud... Mr. Trump also has soured on Kevin McAleenan, who is commissioner of U.S. Customs and Border Protection
.. In recent days, Mr. Trump referred to Mr. Ayers in the present tense as his chief of staff, one White House official said. Mr. Trump has told officials he expects to offer Mr. Ayers the job when Mr. Kelly leaves