President Trump repeated his denial Wednesday that he told the widow of a fallen soldier her husband "must have known what he signed up for," as Rep. Frederica Wilson, D-Fla., has claimed the president said in a phone call Tuesday to the soldier's family.

"I didn't say what that congresswoman said, didn't say it at all," Trump told reporters at the White House before a bipartisan meeting with senators about tax reform.

"I did not say what she said, and I'd like her to make the statement again," Trump added. "I had a very nice conversation with the woman, with the wife, who sounded like a very lovely woman."

Related: Trump says he has proof Frederica Wilson 'totally fabricated' his call with widow of soldier

Soldier's mother: Trump 'did disrespect my son' in phone call to his widow

Wilson accused Trump on Tuesday of upsetting Myeshia Johnson, the wife of slain Army Sgt. La David Johnson, when he called her to offer condolences for the death of her husband in Niger on Oct. 4. Johnson's mother, Cowanda Jones-Johnson, also listened to the call on speakerphone in the back of a limousine on the way to collect her son's body and confirmed Wilson's account of the call.

Trump first denied the claim via Twitter on Wednesday morning, when he alluded to "proof" that would support his characterization of the phone call.

The White House has not responded to questions about what proof Trump may have.

The focus on presidential outreach to the families of fallen soldiers began on Monday, when Trump argued his predecessors had not often called soldiers' family members. Obama administration officials have disputed Trump's claim.

Wilson later slammed Trump's response in a tweet.

"I still stand by my account of the call b/t @realDonaldTrump and Myesha Johnson. That is her name, Mr. Trump. Not 'the woman' or 'the wife,'" she said, misspelling Johnson's first name, which is Myeshia.