ClimateWire: Advocates for comprehensive climate legislation should look no further than the nation’s unemployment rate as they ponder their chances for success this year. With more than 10 percent of the country’s work force currently out of a job, experts say it won’t bode well for the climate bill’s prospects if that number gets any worse. “It was already difficult to achieve agreement in the Congress on climate change, but in the presence of double-digit unemployment, which it appears …