Republicans claim that this measure will eventually "outlaw" the insurance policies that some Americans currently hold. Democrats note that insurers will have several years to comply with the new standards and say that this provision will help the "underinsured" by guaranteeing more generous benefits and lower out-of-pocket costs.
Asked on Wednesday if House Republican Leader John Boehner would be able to get behind HR 3200, the Democratic health-care proposal in the House, if the public option were dropped, his spokesman made clear that the government takeover concerns went beyond the public option.
"There are a number of additional problems with H.R. 3200," said Boehner spokesman Michael Steel. "We don't need to fiddle around the edges of the Democrats' flawed legislation, we need to start over on a real, bipartisan plan to control costs and expand access."
Boehner's spokesman was echoed by Senate Minority Leader Mitch McConnell, R-Ky.
McConnell told ABC News on Wednesday that he believes there are more flaws in the Democrats' health-care reform plan than just the public option.
"There are other problems in the bill," said McConnell. "Tax increases on small businesses; half a trillion dollars in cuts to Medicare -- there are plenty of areas of concern here."
ABC News' Z. Byron Wolf contributed to this report.