Enda Kenny says it would not have been appropriate to challenge Donald Trump on his views when he spoke to the President Elect.
The Taoiseach says Mr Trump indicated a wish to visit Ireland, when they spoke on the phone after the US election.
The Taoiseach's been criticised by opposition parties for not confronting Mr Trump about misogynistic and racist comments made during the campaign.
Enda Kenny says that wasn't the purpose of the call.
"This is the reality of dealing with a new regime and new administration taking up office in the United States.
"My conversation, both with the president-elect and the vice president-elect, was on the basis of the relationship of this country with the United States."
The US president-elect indicated a wish to visit Ireland during the call.
The president-elect had been due to visit his golf course in Doonbeg over the summer, but cancelled the event at short notice.
The Taoiseach says Mr Trump is keen to make it to Ireland at some point during his tenure.
Mr Kenny said: "He actually said himself that he hoped to visit Ireland some time, so let's see when the administration takes up office, what his schedule might be.
"I don't have any indication of his coming at an early date."