By Timothy Cama, The Hill.

Sen. Marco Rubio’s presidential campaign fought charges Wednesday that he once endorsed a cap-and-trade system to fight climate change.

The charges came after the surfacing of a video from 2008 that appeared to show Rubio, then Speaker of Florida's House, calling for the state’s environmental agency to form a cap-and-trade or tax system for carbon dioxide emissions.

“I'm in favor of giving the Florida Department of Environmental Protection a mandate, that they go out and design a cap-and-trade or a carbon tax program and bring it back to the legislature for ratification sometime in the next two years,” he said on a local public-access television program unearthed by the video first reported by Breitbart News.