(May 12, 2017, 11:42 AM EDT) -- NEW YORK — A Securities and Exchange Commission ruling instituting a lifetime trading ban and $82,500 civil monetary penalty on a former Barclays Bank trader should be set aside due to “structural errors in the composition and conduct of the adjudication,” the former trader argues in an April 17 petitioner brief filed in the Second Circuit U.S. Court of Appeals (Thomas C. Gonnella v. Securities and Exchange Commission, No. 16-3433, 2nd Cir.)....