Trump says he's working at NJ golf club

US President Donald Trump says he is hard at work while he's at his private golf club in New Jersey.

On Twitter on Saturday, Trump said: "Working in Bedminster, N.J., as long planned construction is being done at the White House. This is not a vacation - meetings and calls!"

Trump arrived at his private golf club in New Jersey on Friday for a 17-day stay.

He was accompanied by his daughter Ivanka Trump and son-in-law Jared Kushner, and his grandchildren, as well as the aide charged with resetting his chaotic administration, new chief of staff John Kelly.

He held no public events on Saturday and little information was available about how he spent the day. Aides did not answer questions about whether he played golf.

However, when he dropped in on a wedding at the golf club he got out of his golf cart and asked the group if they were having a good time, then paused to take a selfie with one of them before going inside the club.

Presidents have a long tradition of leaving Washington during the summer. But there is also a practical explanation. Everyone working in the White House West Wing had to relocate so the government could replace a 27-year-old heating and cooling system.