The U.S. Supreme Court considers on Monday whether President Barack Obama’s administration overstepped its authority by imposing new regulations to reduce pollution in response to climate change. In a 90-minute oral argument, extended from 60 minutes because many parties are involved, the justices will examine a relatively narrow challenge by industry groups and Republican-leaning states to one aspect of a suite of regulations issued by Obama’s Democratic administration in 2009 and 2010. The regulations represent the first major federal effort to tackle greenhouse gas emissions that scientists say are the driving force behind climate change. Obama has been going it alone on climate change, largely because of opposition from Republicans and some Democrats in Congress. The Clean Air Act has been the Environmental Protection Agency’s main tool for addressing emissions since the U.S. Senate rejected a cap-and-trade bill in 2010. The nine justices will weigh whether […]