US Securities and Exchange Commission chair Gary Gensler made his concerns clear in an interview with Bloomberg on Tuesday, calling out crypto exchanges for offering multiple services that are often in conflict with one another, such as custody, market-making, and trading. Gensler specifically took aim at the top three largest stablecoins — Binance USD, USD Coin and Tether — saying that it is not a coincidence that they are all closely tied to crypto exchanges.