On 12 March 2023, Signature Bank, which was based in New York, was closed by banking regulators in the USA. Its closure happened in the wake of Silicon Valley Bank’s high-profile collapse just a few days prior. Silicon Valley Bank was dealing with a flood of deposit withdrawals that it could not handle. After regulators assumed control of Silicon Valley Bank, it was revealed that depositors tried to withdraw US$42 billion – around a quarter of the bank’s total deposits – in one day. Signature Bank was by no means a behemoth, but it was definitely not small. For perspective, the US’s largest bank by assets, JPMorgan Chase, had total assets of US$3.67 trillion at the end of 2022; Signature Bank, meanwhile, reported total assets of US$110 billion. But what is fascinating – and shocking – about Signature Bank’s failure is not its size. It has to do with its board of directors, one of whom is Barney Frank, a long-time politician who retired from...