Tim Kaine displayed books at a campaign event in Portsmouth, N.H., on Thursday to show the different views of America held by Hillary Clinton and Donald Trump. (Jim Cole/AP)

The Hillary Clinton campaign on Sunday continued to hit Donald Trump for his recently renounced birtherism, with Democratic vice presidential nominee Tim Kaine suggesting that a conspiracy theory about President Obama is too “painful” to be erased in a single statement.

From 2011 until Friday, Trump, the Republican presidential nominee, promoted the idea that Obama was not born in the United States and was not eligible to be president. Though he has often said during the 2016 campaign that he prefers not to talk about Obama’s place of birth anymore, Trump did not say until Friday that he believes the president is American-born.

“President Barack Obama was born in the United States. Period,” Trump said at a news conference in Washington. He did not apologize for his rumor mongering, which had continued even after Obama released his birth certificate in 2011.

“Donald Trump for five years was pushing the completely false notion that President Obama wasn’t born in the United States and wasn’t an American citizen,” Kaine told Chuck Todd on NBC’s “Meet the Press.” “And Chuck, it’s really important to know how painful that is to so many people because, as you know, from the time African Americans came here to Jamestown in 1619 through the Dred Scott decision in the 1850s, if you were African American in this country, you could not be a citizen. Whether you were a slave or free or born here or born elsewhere, you could not be a citizen. And we had to fight a Civil War and change the Constitution to change that.

“So when Donald Trump for five years has been promoting the notion that an African American president is not a citizen, that is extremely powerful and painful to African Americans and others who know this painful chapter in American history.”