There's been a longstanding struggle between the design principles of cryptocurrency - i.e. private payments - and the public policy goals of monitoring our pay

There's been a longstanding struggle between the design principles of cryptocurrency - i.e. private payments - and the public policy goals of monitoring our payments infrastructure for criminal activity. What are cryptocurrency advocates saying now about e.g. FinCEN's jurisdiction over exchanges? Is KYC now standard? Do they submit SARs? Do they agree with the principles, or are they opposed to any sort of oversight?