The collapse of FTX may spur more calls for regulation on Capitol Hill, Lisa Braganca, a former enforcement branch chief at the U.S. Securities and Exchange Commission, said, but she is doubtful about whether Congress will act.“I have serious doubts still about whether Congress wants to step in and do something rather than letting the SEC and the CFTC (Commodity of Futures Trading Commission) figure it out,” Braganca said during an appearance on CoinDesk's “First Mover” program on Wednesday. “This is complicated.”