By Andrew Restuccia - 01/25/11 11:38 PM EST
Staff from the lawmakers' offices have met with a number of industry groups to get feedback on their proposal.
The proposal to block EPA's climate authority comes as some lawmakers, including Sen. Jay Rockefeller (D-W.Va.) have called for a two-year delay in the agency's climate rules.
Upton had previously signaled his support for a proposal to block EPA's authority until relevant lawsuits snaked their way through the courts. But it now appears that he and his colleagues will push to permanently block the agency's climate authority.
The EPA has begun including greenhouse gases in Clean Air Act permits for large new facilities or those that make major modifications. And it is in the process of developing broad greenhouse gas standards for power plants and refineries.