(July 11, 2023, 10:27 AM EDT) -- DENVER — The U.S. Chamber of Commerce as amicus curiae has urged the 10th Circuit U.S. Court of Appeals to uphold a $1.5 million sanction against counsel in a “doomed to fail” shareholder derivative action, but the two law firms that represented the unsuccessful plaintiffs fired back less than a month later that the award is unwarranted and unprecedented....