Senior aide to Trump goes public with criticism after resignation

Omarosa Manigault-Newman, one of United States President Donald Trump's most senior aides, said she had felt uncomfortable and upset in the White House as its most high-profile African American woman, after resigning amid reports of a blazing row at a Christmas party.

Manigault-Newman was an assistant to the president and director of communications for the White House Office of Public Liaison, working on outreach to various constituency groups.

While denying reports she had been fired from her post, she hinted she had revealing and potentially damaging stories to share from her time in the Trump administration.

"As the only African American woman in this White House, as a senior staff and assistant to the president, I have seen things that have made me uncomfortable, that have upset me, that have affected me deeply and emotionally, that has affected my community and my people," The Guardian quoted Omarosa, as saying.

"And when I can tell my story, it is a profound story that I know the world will want to hear," she continued.

Manigault-Newman, in an interview on Thursday, also said she made a scene while being escorted from the White House grounds this week were "100% false."

She also denied reports that she tried to enter the White House residence to see Trump, calling those reports "ridiculous" and "absurd".

The US secret service, however, had clarified it was "not involved in the termination process of MS Manigault Newman or the escort off of the complex".

According to The Guardian, the agency also said that "our only involvement in this matter was to deactivate the individual's pass which grants access to the complex."

A source familiar with Manigault-Newman's departure told the Guardian that her refusal to defend the administration had long been a sticking point.

"Manigault-Newman also was unwilling to talk about Trump's civil rights record in the wake of his visit to the opening of a new museum in Mississippi on Saturday and her refusal to be a public advocate for the White House as its most prominent African American woman culminated on Tuesday night in a meeting with chief of staff John Kelly and several lawyers in the White House Situation Room that the source said ended with her departure from the administration," The Guardian adds.

Trump had written on Twitter, on Wednesday: "Thank you Omarosa for your service! I wish you continued success."

Deputy national security advisor Dina Powell is also slated to leave early next year.