Donald Trump now believes that President Barack Obama was born in the United States, his campaign has said.
Trump spokesman Jason Miller issued a statement after the Republican presidential candidate gave an interview to The Washington Post in which he declined to say whether he believes Mr Obama was born in Hawaii.
He said he would "answer that question at the right time - I just don't want to answer it yet".
Mr Trump helped fuel the rise of the "birther" movement, which claimed Mr Obama was born outside the US and is therefore ineligible to be president.
Mr Miller's statement said Mr Trump "believes that President Obama was born in the United States".
He accused Mr Trump's rival Hillary Clinton of launching the birther movement during her unsuccessful primary run against Mr Obama in 2008.
Mr Miller says Mr Trump ended the "ugly incident" by compelling Mr Obama to release his birth certificate.
Mrs Clinton had attacked Mr Trump over the issue on her return to the campaign trail after a three-day break ordered by her doctor.
The Democratic candidate told the Congressional Hispanic Caucus Institute that Mr Trump "still wouldn't say Hawaii, he still wouldn't say America".
Mrs Clinton asked: "This man wants to be our next president? When will he stop this ugliness, this bigotry?"
The rally in North Carolina marked her first public appearance since Sunday, when she abruptly left a 9/11 memorial service after getting dizzy and dehydrated.
She had been diagnosed with pneumonia last Friday, but the campaign informed the public only after video of an ill Mrs Clinton emerged.
An upbeat Mrs Clinton walked onstage to James Brown's song I Feel Good.
She said that while sitting at home this week was "pretty much the last place I wanted to be" the time helped clarify how she wants to end her campaign against Mr Trump.
"We're offering ideas, not insults," she said. "A plan that will make a real difference in people's lives, not prejudice and paranoia."
Mrs Clinton's dizzy spell prompted fresh questions about both candidates' openness regarding their health.
Mr Trump released a new letter from his doctor on Thursday detailing his blood pressure, cholesterol and medications, a day after Mrs Clinton made public a letter from her physician with similar information.
Both candidates' doctors declared them fit to serve as president.
Mr Trump's letter said he is 6ft 3in and 236lb (16st 12lb) - giving him a body mass index falling into the "overweight" range.
The 70-year-old has blood pressure of 116 over 70 and his total cholesterol is 169, his doctor says.
Mr Trump's team took a swipe at Mrs Clinton's brief absence from the campaign trail in a statement accompanying the new health information.
"We are pleased to disclose all of the test results which show that Mr Trump is in excellent health, and has the stamina to endure - uninterrupted - the rigours of a punishing and unprecedented presidential campaign and, more importantly, the singularly demanding job of president of the United States," it said.
Until Thursday, the only information on Mr Trump's health had come in a widely ridiculed letter from his doctor declaring he would be the healthiest person to ever serve as president.
With two months until election day, the race between Mrs Clinton and Mr Trump is far tighter than many in both parties expected.