Brian Armstrong, the CEO of cryptocurrency exchange Coinbase (COIN), suggested that if the regulatory landscape for the sector is not clarified, the company may think about leaving the United States. He discussed the potential for the US to become a significant market for cryptocurrencies during Fintech Week in London, but he also pointed out that there is only one regulator: the Financial Conduct Authority (FCA), which is in charge of commodities and securities, and the Securities and Exchange Commission (SEC), which is in charge of the Commodity Futures Trading Commission (CFTC) and the Securities and Exchange Commission (SEC). The SEC recently sent Coinbase a Wells Notice informing it that there would soon be regulatory action related to the listing of unregistered securities.