Washington (AFP) – The US Supreme Court ruled Thursday that the government’s key environmental agency cannot issue broad limits on greenhouse gases, sharply curtailing the power of President Joe Biden’s administration to battle climate change. By a majority of 6-3, the high court found that the Environmental Protection Agency did not have the power to set sweeping caps on emissions from coal-fired power plants, which produce nearly 20 percent of the electricity consumed in the United States. The decision sets back Biden’s hopes of using the EPA to bring down emissions to meet global climate go…