House Democrats on Wednesday unveiled long-awaited legislation designed to reduce carbon emissions and take on climate change by binding the United States to commitments made under the Obama-era Paris climate accord. Speaker Nancy Pelosi (D-Calif.) joined other Democrats in releasing the legislative package in the Capitol, framing climate change as "an existential threat" and promising that the party will move the legislation quickly to the floor. “The American people know that the … crisis is an existential threat of our generation, of our time, a crisis manifested in natural disasters of epic proportions,” she said. The five-page bill known as...