WASHINGTON (AP) — President Barack Obama is planning a public show of support for new climate change rules that his administration will unveil Monday.

The White House says Obama will spotlight the first-ever carbon pollution limits on existing power plants during his weekly radio and Internet address, released Saturday.

Full details will come Monday. That's when EPA Administrator Gina McCarthy will formally announce the proposal.

Obama will discuss the rules Monday with public health leaders on a conference call hosted by the American Lung Association and other groups.

The plan seeks to curb heat-trapping greenhouse gases blamed for global warming. Administration officials say the rules will give states reduction goals, then allow flexibility for how states choose to meet them.