House Speaker John Boehner (R-Ohio) and Senate Minority Leader Mitch McConnell (R-Ky.) both panned President Obama's proposal to cut the deficit by $3 trillion as unhelpful to the supercommittee's work.

McConnell said that the supercommittee is taking deficit reduction much "more seriously than the White House."

"Veto threats, a massive tax hike, phantom savings, and punting on entitlement reform is not a recipe for economic or job growth — or even meaningful deficit reduction. The good news is that the Joint Committee is taking this issue far more seriously than the White House," McConnell said in a statement.

Boehner echoed McConnell in a separate statement.

"Pitting one group of Americans against another is not leadership. The Joint Select Committee is engaged in serious work to tackle a serious problem: the debt crisis that is making it harder to get our economy growing and create more American jobs," Boehner said.

"Unfortunately, the President has not made a serious contribution to its work today," Boehner continued. "This administration’s insistence on raising taxes on job creators and its reluctance to take the steps necessary to strengthen our entitlement programs are the reasons the president and I were not able to reach an agreement previously, and it is evident today that these barriers remain."

Both Boehner's and McConnell's statements came shortly after Obama delivered an animated speech on economic growth and deficit reduction in the Rose Garden. In his speech, Obama accused Boehner of being inconsistent on balancing taxes and job creation. Boehner previously showed openness to President Obama's job creation package but vowed not to back any plan that included tax increases.

"The Speaker says we can't have it 'my way or the highway' and then basically says my way or the highway," Obama said.

In his speech, Obama proposed a total of $3 trillion in savings and vowed to veto any deficit-reduction plan that modifies Medicare benefits while also not raising taxes.

Other Republicans were quick to shoot down his proposal.

"I am concerned that his deficit reduction strategy sometimes seems more defined by political posturing, such as recycling tax hikes that even lawmakers in his own party have publicly opposed," Sen. Pat Toomey (R-Pa.), a member of the supercommittee, said in a statement. 

—This story was updated at 11:57 a.m.