In a sharp challenge to the Obama administration, House Republicans intend to unveil legislation Wednesday to ban the Environmental Protection Agency from regulating greenhouse gases under the Clean Air Act and expect to advance the bill quickly, officials disclosed Tuesday night.

The officials said the bill would nullify all of the steps the EPA has taken to date on the issue, including a threshold finding that greenhouse gases constitute a danger to the public health and welfare.

In addition, it seeks to strip the agency of its authority to use the law in any future attempts to crack down on the emissions from factories, utilities and other stationary sources.

Many scientists say that carbon dioxide and other heat-trapping pollution contribute to global warming, and attempts at regulating them is a major priority for President Barack Obama as well as environmentalists. Critics argue the evidence is thin and that new rules will drive up the cost of business and cause the loss of jobs.

The officials who described the GOP plans did so on condition of anonymity, saying they were not authorized to pre-empt the release of a draft measure prepared by the Energy and Commerce Committee, chaired by Rep. Fred Upton of Michigan.

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