Associated Press: President Barack Obama is trying to negotiate a legacy-making climate change pact this coming week in Paris with one hand tied behind his back. Congress can't even agree whether global warming is real.
Scientists point to the global agreement, years in the making, as the last, best hope for averting the worst effects of global warming. Obama has spent months prodding other countries to make ambitious carbon-cutting pledges to the agreement, which he hopes will become the framework for countries...