Top Republican officials at the U.S. Securities and Exchange Commission are poised to begin revamping the regulator’s cryptocurrency policies, potentially as soon as next week when President-elect Donald Trump takes office, three sources said. Among the steps commissioners Hester Peirce and Mark Uyeda are considering are starting the process that will ultimately lead to guidance or rules clarifying when the SEC considers a cryptocurrency to be a financial asset and reviewing some pending digital currency cases in court, two of the sources said.