President Barack Obama meets with Treasury Secretary Tim Geithner in the White House on Aug. 4, 2011. (White House photo/Pete Souza)

(Update: Late Monday morning, the White House said President Obama will deliver a statement about the economy -- and the first U.S. credit downgrade in history -- at 1 p.m. from the White House.)

(CNSNews.com) - More than 48 hours after Standard & Poors lowered its triple-A credit rating for the United States, President Obama has not said a thing about it, although one of his advisers is blaming tea party conservatives.

The president's Saturday morning radio address had been taped in advance of his weekend trip to Camp David, but if he chooses to, the president can always do a live broadcast to reflect changing events. S&P's downgrade was announced Friday after the stock markets closed.

According to the White House Web site, Obama has "no public schedule" on Monday, but Politico reported he will attend two fund-raisers in Washington Monday evening.

The president's adviser David Axelrod told CBS's "Face the Nation" on Sunday that the S&P's downgrade from AAA to AA+ for the first time in U.S. history was a "tea party downgrade."

"I think first of all, people are less concerned about that than where we go moving forward," Axelrod said. "But let's look at the history of this: The fact of the matter is that this is essentially a tea party downgrade. The tea party brought us to the brink of a default," Axelrod said.

Sen. John Kerry, speaking Sunday on NBC's "Meet the Press," also blamed the downgrade on the tea party: "I believe this is without question the tea party downgrade. This is the tea party downgrade because a minority of people in the House of Representatives countered even the will of many REps in the United States Senate, who were prepared to do a bigger deal..."

Responding to Kerry, Sen. John McCain (R-Ariz.) said he agrees "that there is dysfunction in our system and a lot of it has to do with the failure of the president of the United States to lead.

"I would remind you that Republicans control one-third of the government," McCain said. "The Senate and the presidency are controlled by the Democrats. And the fact is that the president never came forward with a (deficit reduction) plan. Now, I was gratified to hear that he had plans, but there was never a specific plan. There was always the so-called 'leading from behind.'

"Now, look, we could have reached an agreement (on raising the debt ceiling)  a lot earlier," McCain admitted, but he said members of the House of Representatives received a "mandate" from voters last November on jobs, the economy, and spending. For them to agree to tax and spending increases would have repudiated that mandate, McCain said.