Mitt Romney and Paul Ryan stepped up their attack Saturday on President Obama, saying he is out of fresh ideas on fixing the economy and other pressing problems in America – just days before the final presidential debate and in the final weeks of the campaign.

“We have enormous chances in this country, but the president continued to kick the can down the road,” Republican vice presidential nominee Rep. Paul Ryan said at a rally Saturday in Moon Township, Pa., outside Pittsburgh.

The campaign also on Saturday announced a new ad that criticizes the president’s policies on debt, health care, taxes, energy and Medicare, arguing that Obama is simply offering more of the same. The campaign did not say where the spot would air.

With the final debate on Monday, Obama and Romney have retreated from the campaign trail for the weekend to bone up on foreign policy while their running mates continue to make stops.

The debate in Boca Raton, Fla., comes just 15 days before the election.

Obama left Friday for Camp David, the presidential hideaway in Maryland’s Catoctin Mountains. He was to remain there with advisers until Monday morning. Romney is spending the weekend in Del Ray, Fla., with aides preparing the debate.