US presidential elections: Obama's team launches ad campaign against Mitt Romney

WASHINGTON: Barack Obama's re-election campaign team has confronted Mitt Romney head-on with an advertisement campaign in six key battle ground States, challenging his claims about the incumbent US President.

Notably Romney is still technically one of the four Republican candidate in the race, but this was the most direct attack that Obama's official campaign has launched against the former Governor of Massachusetts.

A new video that hit the internet yesterday along with the TV advertisement is being played in six States since Monday.

In the web video, Romney's victory speech from Tuesday, when he won the primary contests in Wisconsin, Maryland and Washington DC, are spliced together with clips of Obama's speech earlier to a conference of news editors.

"The president has pledged to 'transform America,' and he has spent the last four years laying the foundation for a new government-centered society," Romney says.

Obama says in the rebuttal, "I have never been somebody who believes that government can or should try to solve every problem."

"He saw free enterprise as the villain and not the solution," says Romney.

"I believe deeply that the free market is the greatest force for economic progress in human history," says the US President.