President Obama's reelection campaign confronted Mitt Romney head-on on Wednesday with a Web video methodically challenging the former Massachusetts governor's claims about Obama.

It was the most direct attack that Obama's official campaign has launched against Romney, who is still technically one of four Republicans that could face Obama in November. 

While the Democratic National Committee has worked to undercut Romney for months, the Obama campaign has kept a lower profile, laying the groundwork for a two-man fight once the GOP primary resolves. That moment of resolution appears to have arrived — at least, as far as Democrats are concerned. 

The Obama campaign debuted a new television ad on Monday airing in six battleground states. It was the first Obama ad to mention Romney by name, but he wasn't the focus of that ad, which defended Obama's positions on energy against attacks from the oil-and-gas industry.

Romney is the sole focus of the new video, in which portions of Romney's victory speech from Tuesday, when Romney swept the primary contests in Wisconsin, Maryland and the District of Columbia, are spliced together with clips of Obama's speech earlier that same day 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.

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

Other clips of Obama recounting the programs he's eliminated and small-business taxes he has cut are used to push back on Romney's claims that Obama has pursued a big-government agenda.

"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 Obama.

Watch the video: