Federal Reserve Chair Jerome Powell said Wednesday that he attended the Supreme Court arguments over President Trump’s effort to fire Fed Governor Lisa Cook because it was the “important legal case in the Fed’s 113-year history.” “As I thought about it, I thought it might be hard to explain why I didn’t attend,” he told reporters, noting that former Fed Chair Paul Volcker also appeared at the Supreme Court in the 1980s. Justices are weighing whether the president can legally fire Ms. Cook after