Sens. Elizabeth Warren (D-MA) and Sheldon Whitehouse (D-RI) and Reps. Alexandria Ocasio-Cortez (D-NY), Rashida Tlaib (D-MI), and Chuy Garcia (D-IL) sent letters to the SEC, CFTC, Federal Reserve, FDIC, CFPB, and Treasury asking each agency to respond to a series of questions by November 7 about efforts to “stop the revolving door” between financial regulators and the cryptocurrency industry.