Major banks and business groups sued the Federal Reserve on Tuesday, alleging the U.S. central bank’s annual “stress tests” of Wall Street firms violate the law. The lawsuit filed in U.S. District Court in Columbus, Ohio, claims the Fed’s practice of determining how big banks perform against hypothetical economic turmoil, and assigning capital requirements accordingly, do not follow proper administrative procedure. Plaintiffs included the Bank Policy Institute, the U.S. Chamber of Commerce and the American Bank Association. The lawsuit marks the latest example of the banking industry growing bolder and challenging in court their regulators’ powers, particularly in the wake