Trump signs order sweeping away Obama-era climate policies

By Valerie Volcovici and Jeff MasonWASHINGTON (Reuters) - President Donald Trump on Tuesday signed an order to undo Obama-era regulations to curb climate change, keeping a campaign promise to support the coal industry while calling into question U.S. support for an international deal to fight global warming.Flanked by coal miners, Trump enacted his "Energy Independence" executive order at the Environmental Protection Agency.