ABC News anchor George Stephanopoulos apologized Thursday over his $75,000 in donations to the Clinton Foundation over the last few years.

Stephanopoulos was criticized for failing to disclose the donations, $25,000 in 2012, 2013 and 2014, while reporting on the Clintons in recent years.

The former Clinton White House adviser said he was under the impression that the contributions were "a matter of public record," because they were in his tax filings.

“However, in hindsight, I should have taken the extra step of personally disclosing my donations to my employer and to the viewers on air during the recent news stories about the Foundation. I apologize," he said in the statement. 

Sen. Rand Paul (R-Ky.) and "Clinton Cash" author Peter Schweizer weighed in Thursday night on "Hannity."

Paul said that he has avoided interviews with Stephanopoulos in the past year because of the close ties to the Clintons. 

"We've made the decision that he's too close to the Clintons to really give an objective interview," said Paul.

The GOP presidential contender called the donations a "direct conflict of interest and I think really a breach of journalistic etiquette."

"The questions is: is that a payment for access? I don't know that it is. I think he probably would have gotten access to the Clintons anyway, but it doesn't look right," said Paul.

Sean Hannity pointed out that Stephanopoulos went after Schweizer when the author was on "This Week" to discuss "Clinton Cash."

Hannity said that at one point Stephanopoulos referenced an ABC News investigation into the book.

"When he said 'ABC News has concluded this.' Do you think he was basically relying on his relationship with the Clintons to say that?" Hannity asked.

"That would be a great question to ask him," Schweizer responded.

"What did he actually mean when he said 'ABC News had looked into it?'" Schweizer asked, adding that he'd like to do another interview with ABC News in light of this development.

Schweizer said other ABC News investigative reporters have substantiated some of the key elements of "Clinton Cash."

Watch the Paul segment above and the Schweizer interview below.