Elizabeth Warren’s anti-crypto crusade splits the left

Democratic lawmakers are entering a crypto collision course.

Questions around how to police digital currency and whether to support its adoption are driving a rift not just between the party’s liberal and centrist wings but also among progressives who often see eye-to-eye on financial regulation.

Sen. Elizabeth Warren of Massachusetts — who has long led the left’s charge to crack down on banks and Wall Street — has emerged as one of the party’s most vocal cryptocurrency critics, warning that it exposes consumers to danger, is ripe for financial crimes and is...