Gary Gensler, Chairman of the U.S. Securities and Exchange Commission (SEC), warns crypto exchanges to follow the rules and protect the public.Gensler emphasizes the need for stronger oversight in the crypto industry due to fraudsters and scammers.The SEC is engaged in legal battles with major exchanges like Coinbase, Kraken, and Binance.Gensler believes that existing securities laws apply to crypto and argues against the need for new regulations.