WASHINGTON (AP):With severe spending cuts now the law of the land, President Barack Obama and congressional Republicans refused yesterday to concede any culpability for failing to stave off what both parties acknowledged was a foolhardy way to slash US$85 billion in federal spending.

The still-fragile economy braced itself for the gradual but potentially grave impact of the across-the-board cuts, which took effect last Friday at the stroke of Obama's pen.

Hours earlier, he and congressional leaders emerged from a White House meeting no closer to an agreement.

Even as they pledged a renewed effort to retroactively undo the spending cuts, both parties said the blame rests squarely on the other for any damage the cuts might inflict.

There were no indications that either side was wavering from entrenched positions that for weeks had prevented progress on a deal to find a way out: Republicans refusing any deal with more tax revenue and Democrats snubbing any deal without it.

"None of this is necessary," Obama said in his weekly radio and Internet address yesterday.

"It's happening because Republicans in Congress chose this outcome over closing a single wasteful tax loophole that helps reduce the deficit."

The president said the cuts would cause "a ripple effect across the economy" that would worsen the longer they stay in place, eventually costing more than 750,000 jobs and disrupting the lives of middle-class families.

In the Republican-controlled House, lawmakers washed their hands of the mess, arguing that bills they passed in the last Congress to avert the cuts absolved them of any responsibility. Those bills passed with little to no Democratic support and were never taken up by the Senate.

"We've done the work and shown that these choices can be made in a responsible, thoughtful way," said Republican Cathy McMorris Rodgers of Washington in the GOP address.

Obama was holding out hope that as Americans start feeling the effects of the sequester, the term used for the automatic spending cuts, public pressure will force lawmakers back to the table.