He also said he didn't know why his longtime lawyer, Michael Cohen, had made the payment and didn't know where Cohen had gotten the money.
"You'll have to ask Michael Cohen. Michael is my attorney. You'll have to ask Michael," he said Thursday aboard Air Force One while returning from West Virginia for an event on the new tax overhaul law.
Until now, Trump has not answered any questions on Daniels, though the White House has consistently said Trump denies a relationship.
But still, the mainstream media has continued to keep the porn star in the spotlight.
She has made various claims that she had a sexual encounter with the president in 2006 and was paid to keep quiet about it as part of a nondisclosure agreement she signed days before the 2016 presidential election. Daniels is now seeking to invalidate that agreement.