Just down the coast from Mar-a-Lago in March, at a conference hall in Boca Raton, Florida, Caroline Pham, the acting chairman of the Commodity Futures Trading Commission, took to a neon-lit stage to give a speech commemorating the agency’s 50th anniversarySince 1975, when futures were still mostly used by industrial companies and farmers, through the explosion of financial derivatives and the advent of cryptocurrencies, the CFTC has, with little fanfare, overseen markets that have grown to more ...