US states sue Trump over his move to scrap greenhouse gases ruling - BBC

Multiple U.S. states have filed a lawsuit challenging the Trump administration's decision to rescind a federal greenhouse gas emissions rule. The move targets what had been an Obama-era environmental regulation governing pollution standards. The lawsuit represents a clash between states seeking to maintain climate protections and the Trump administration's broader effort to roll back environmental regulations. States that have joined the legal challenge view the rescinded rule as critical to meeting climate commitments and reducing air pollution. The case will likely test the legal grounds for the administration's deregulatory actions and could determine whether similar environmental rollbacks face court challenges.