Republican National Committee Chairman Reince Priebus on Friday brushed aside concerns about Donald Trump's refusal to release his tax returns.

"If he doesn't release his tax returns, I don't know if anyone cares or if it's gonna have any effect," Priebus said on "Fox and Friends" Friday morning. "Certainly all of these other decisions he's made have only helped him."

Trump has said he refuses to release his tax returns while they are under audit, something that has generated strong pushback.

Also in the interview, Priebus elaborated on the meeting between Trump and House Speaker Paul Ryan on Thursday in Washington, D.C.

"There wasn't a whole lot of animosity, there wasn't any huge differences," Priebus said of the meeting, which he called a "specific conversation."

Priebus said the meeting was both personable and gracious, and that he thinks, "We're going to get there" in terms of party unity and an eventual endorsement of Trump by Ryan.

"The meeting was a great meeting. The two of them agreed on far more than they disagreed on," Priebus said, elaborating that Ryan, who is also the chairman of the GOP's nominating convention this summer, will get to an endorsement. "Paul wants to get there … I feel very confident that we are going to be a unified party moving into Cleveland."

Trump needs 1,237 delegates to technically lock up the GOP nomination ahead of the convention in July. He currently has 1,134 including unbound delegates, according to the Washington Examiner's delegate tracker based on Associated Press estimates.