Photo illustration: Shoshana Gordon/Axios. Photo: Andrew Harrer/Bloomberg via Getty ImagesGary Gensler will step down as chair of the U.S. Securities & Exchange Commission at noon on Inauguration Day, the agency announced on Thursday.Why it matters: Gensler has had an aggressive tenure, marked by controversial rulemaking and a combative approach with the cryptocurrency industry.What they're saying: "The staff and the Commission are deeply mission-driven, focused on protecting investors, facilita...