President Barack Obama on Monday blamed a downgrade in the United States' credit rating on political gridlock in Washington and said he would offer some recommendations on how to reduce federal deficits.

Obama said in a White House appearance that he hopes the Standard and Poor's downgrade of U.S. debt to AA-plus from AAA will give lawmakers a new sense of urgency to tackle deficit spending and said he did not believe the reductions could be carried out with spending cuts alone.

A congressional committee, to be formed under the legislation passed last week that averted a government default, is to report its recommendations in late November on how to cut $1.5 trillion in spending over a decade.

Obama said he would offer his own recommendations for fixing the problem and cited again the need to raise taxes on wealthier Americans and make modest adjustments to popular but expensive entitlement programs.