A federal appeals court has agreed to hear arguments in a pair of cases challenging the Obama administration’s climate rule proposal for power plants. The Court of Appeals for the District of Columbia Circuit said Tuesday that it will hear oral arguments from the various sides in the cases on the morning of April 16. Twelve states, led by West Virginia, along with coal mining company Murray Energy Corp., filed separate lawsuits last year asking the court to overturn the Environmental Protection Agency’s (EPA) proposed rule to cut carbon pollution from power plants by 30 percent by 2030. In briefs...