The biggest U.S. commercial banks will take their fight against disclosure of Federal Reserve lending in 2008 to the Supreme Court if necessary, the top lawyer for an industry-owned group said. Continued legal appeals will delay or block the first public look at details of the central bank’s $2 trillion in emergency lending during the 2008 financial crisis. The Clearing House Association LLC, a group that includes Bank of America Corp. and JPMorgan Chase & Co., joined the Fed in defense of a lawsuit brought by Bloomberg LP, the parent company of Bloomberg News, seeking release of records related to four Fed lending programs. The U.S. Court of Appeals in Manhattan ruled March 19 that the central bank must release the documents. A three-judge panel of the appellate court rejected the Fed’s argument that disclosure would stigmatize borrowers and discourage banks from seeking emergency help.