The U.S. Environmental Protection Agency will roll out more regulations on greenhouse gases and other pollution to help fight climate change, but they will not be as strong as action by Congress, a senior administration official said. The agency “has a huge role to play in continuing the work to move from where we are now to lower carbon emissions”, said the official, who did not want to be identified as the EPA policies are still being formed. President Barack Obama, looking to take the lead in global talks on greenhouse gas emissions, has long warned that the EPA would take steps to regulate emissions if Congress failed to pass a climate bill.

Two U.S. business groups opposed on Wednesday the latest version of a climate change proposal circulating in the U.S. Senate, saying it was unfair to power companies and would hurt energy-intensive industries. Senators John Kerry, a Democrat, and Joe Lieberman, an independent, have crafted a draft bill focusing on capping greenhouse gas pollution from electric power utilities first. It scales back previous ambitions for a broad attack on emissions. The plan would launch a “cap-and-trade” market in which utilities that cut pollution could sell credits to companies that do not. It expects overall emissions limits would be achieved because the cap on all utilities toughens over time.