Fox News' misleading attempt to downplay the involvement of right-wing groups in the prominence of anti-Obamacare advertisements fell apart after a later segment on Fox revealed the heavy involvement of conservative special interest groups in promoting the campaign ads. 

On the February 27 edition of Fox's Fox and Friends, co-hosts Elisabeth Hasselbeck, Clayton Morris, and Brian Kilmeade attacked Senate Majority Leader Harry Reid for pointing to conservative special interest groups as the origin of Obamacare attack ads. Hasselback asked viewers to “actually look at the facts” before running a graphic to show that political donations from the Koch brothers came in at 59th in overall political donations:

Fox's narrative that conservative groups are not heavily involved in the political process was debunked a short time later on Fox News itself. On America's Newsroom, Peter Doocy admitted that the Obamacare horror story advertisements heavily promoted on the network have, in fact, been funded by right-leaning organizations, calling groups like Americans for Prosperity “very involved” in pushing campaign ads:

MACALLUM: Peter, how involved are these outside groups really in the early ad campaigns we're seeing?

DOOCY: Very involved, Martha. Especially the right-leaning Americans for Prosperity who has already spent to $30 million since late summer to introduce America to people they say are victims of obamacare.

Reid was correct in tying these advertisements to right-leaning groups. The Washington Post's Fact Checker notes that the Koch-funded Americans for Prosperity “has run about 50 anti-Obamacare ads since July.”

Another Washington Post article quotes Tim Phillips, the president of American for Prosperity, saying that the health care law “has been the predominant focus of both our grass roots and our advertising efforts.” This is evidenced by the $30 million the group has put forth on attack advertisements, 95% of which has gone towards ads that specifically target the Affordable Care Act. The article also noted that Americans for Prosperity is not the only conservative group creating these ads:

In Senate races, where control of the chamber is on the line, all but $240,000 of the $21.2 million that super PACs are spending on television advertising has gone into attacks centered on the health-care law, said Matt Canter, deputy executive director of the Democratic Senatorial Campaign Committee. The exceptions were ad buys in three states that criticized Democratic senators for supporting President Obama's judicial nominees.