“According to whistleblower communications that we have corroborated, personnel in the FDIC’s Washington, D.C. headquarters are urging FDIC regional offices to send letters to multiple banks requesting that they refrain from expanding relationships with crypto-related companies, without providing any legal basis for sending such letters,” Toomey wrote. “… As I understand it, in one or more of these cases, a bank planned to give customers access to a crypto-related company’s trading platform via the bank’s mobile or internet banking app.”