A visit by President Trump to Ireland in November has been cancelled, according to Irish media.
But an Irish government spokesman said the trip had been “postponed”.
“The US side has cited scheduling reasons,” he added.
The White House announced in August that Mr Trump would travel to Ireland as part of a trip to attend the 100th anniversary of the armistice that ended World War One in Paris on 11 November.
He had been due in Ireland the following day.
The Irish Independent reported that the president’s entire European itinerary was under review, with the Irish part of it expected to be cancelled.
It would be a “massive relief to the government”, the paper added.
RTE, which also said the visit had been cancelled, said an advance party from the White House had been due in Ireland prior to the president’s arrival.
Mr Trump was apparently planning to spend a day in Dublin before travelling to Doonbeg, Co Clare, where he owns golf links.
Mr Varadkar told RTE radio earlier this month that the prospect of a visit “came a little bit out of the blue”.
“There is an open invitation to the US President to visit Ireland at any time,” he added.
“I think they’ve all visited since Reagan, if not before, and obviously there’s an open invitation for me, or any future Taoiseach, to attend Washington in March.”