By Laura Barron-Lopez - 05/30/14 10:55 AM EDT
Environmental Protection Agency chief Gina McCarthy will unveil a proposal for the nation's first ever carbon emissions limits on existing power plants Monday, a White House official confirmed Friday.
McCarthy said last week that Obama had indicated he might personally announce the rule, but a White House official said Obama would not be joining McCarthy for the announcement.
Instead, Obama will dedicate his weekly address on Saturday to the carbon pollution rule, the official said.
Also on Monday, Obama will participate in a conference call hosted by the American Lung Association with the public health community.