FILE - In this March 28, 2012 file photo, Sen. John McCain, R-Ariz. listens during a news conference on Capitol Hill in Washington. McCain said in an interview posted online Friday that "foreign money" was helping fellow Republican Mitt Romney's presidential hopes and singled out one of his ally's most generous supporters. (AP Photo/Jacquelyn Martin, File)  Sen. John McCain (R-Ariz.) shown in 2012.  (Jacquelyn Martin/AP)

A day after House Oversight Chairman Darrell Issa called White House Communications Director Jay Carney a "paid liar" and suggested that the IRS scandal was coordinated in Washington, two Republican senators are pushing back on his comments.

Issa said Sunday that the targeting of conservatives "was coordinated, in all likelihood, right out of Washington headquarters" and that Carney was a "paid liar" by claiming it was a "local rogue" situation in Cincinnati. 

"I never like to use that word," Sen. John McCain (R-Ariz.) said of the "liar" charge in an interview with CBS Monday morning. "I think that we should let these investigations take their course, let the facts come out ... I think these hearings are what we should rely on to a significant degree."

And in an interview with Fox News Radio, Sen. Lindsey Graham (R-S.C.) also distanced himself from Issa's comments.

"Let's not make it personal. Jay Carney is not the issue here. He's the spokesman for the White House," Graham said, according to the Huffington Post.

The senator also cautioned against assertions that the White House was involved in the scandal.

“I don’t believe this was something thought up in the Cincinnati office, but I have no evidence that goes to the White House,” he said. While he said it was clear that there was a "coordinated effort by some people to silence conservative critics of the president," he said we don't yet know how far that effort went.

Carney himself brushed off Issa's accusation with a joke, calling it "amazing."