Michael Barr’s departure as vice chair for supervision at the Federal Reserve could help pave the way for bitcoin and other crypto assets to have a broader role in the U.S. financial system. But it isn’t the only avenue opening to President-elect Donald Trump that could allow him to ease crypto rules. Federal banking regulators during the Biden years, including Barr, have cracked down on crypto, viewing them as destabilizing—especially after the collapse of the fraud-riddled FTX crypto empire.