Mick Mulvaney is Donald Trump’s choice of new acting White House chief of staff, but he was not always a fan of the president, a 2016 video has revealed.

A video shows Mick Mulvaney describing Donald Trump as “a terrible human being”. He made the disparaging remark in a debate shortly before the 2016 presidential election.

He said: “Yes, I am supporting Donald Trump, but I’m doing so despite the fact that I think he’s a terrible human being.”

Mick Mulvaney also describes Donald Trump’s then opponent, Hillary Clinton, as “just as bad”.

The 51-year-old is a formerRepublican Congressman.The video, which was obtained by the Daily Beast was taken during a debate with Democratic challenger Fran Person in York, South Carolina.

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Mick Mulvaney is currently director of the Office of Management and Budget (OMB) and takes up his new role in January.

An OMB spokeswoman told the New York Times that the remarks had been made before Mick Mulvaney had met President Trump and was “old news”.

Meghan Burris said Mick Mulvaney “both likes and respects the president, and he likes working for him”.

The White House has not responded.

Meanwhile, a 2016 Facebook post shows that Mick Mulvaney described Donald Trump as “not a very good person”, NBC reported.

Mick Mulvaney was responding to the release of a tape from 2005 in which Donald Trump made inappropriate comments about women.

He wrote in a post: “I think one thing we’ve learned about Donald Trump during this campaign is that he is not a very good person.

“What he said in the audiotape is disgusting and indefensible. My guess is that he has probably said even worse.”

However, he added: “I’ve decided that I don’t particularly like Donald Trump as a person. But I am still voting for him. And I am still asking other people to do the same. And there is one simple reason for that: Hillary Clinton.”

Mick Mulvaney replaces General John Kelly, who steps down at the end of the year.