On May 5, 2015, the Eleventh Circuit Court of Appeals ruled in Wiersum v. U.S. Bank, N.A. (pdf) that the National Bank Act (“NBA”), 12 U.S.C. §24 (Fifth), preempted a bank officer’s state law whistleblower claim that he was wrongfully terminated for opposing the bank’s alleged unlawful conduct. This was a first-impression issue for the…