CFTC Commissioner Mersinger to be appointed as CEO of Blockchain Association According to The Block, Summer Mersinger, a member of the U.S. Commodity Futures Trading Commission (CFTC), will step down on May 30th and become the CEO of the Blockchain Association, a lobbying organization for the cryptocurrency industry, on June 2nd. During his tenure, Mersinger actively promoted cooperation between the CFTC and SEC in developing a regulatory framework for cryptocurrency assets.