SAN FRANCISCO (AP) — California stands in "complete opposition" to a Trump administration plan to scrap a policy slashing climate-changing emissions from power plants, its top air official said Wednesday at a U.S. hearing in a state helping lead the fight against global warming.

State officials joined hundreds of other opponents, including technology billionaire Tom Steyer, in speaking out against ending the Obama-era Clean Power Plan at the hearing in San Francisco, billed as the latest in a series of national "listening sessions" by the U.S. Environmental Protection Agency.

"I know this is a...