It has some. Back in 2011 or so when mtgox/bitinstant were big, none of them really knew what they were supposed to do. Nobody even knew if bitcoin was enough l

It has some. Back in 2011 or so when mtgox/bitinstant were big, none of them really knew what they were supposed to do. Nobody even knew if bitcoin was enough like "money" to qualify under money transmitter laws. The state and federal regulatory agencies didn't know what bitcoin was, and certainly didn't provide any guidance for the exchanges on what they were supposed to do to comply with the law. Now, we have more regulatory guidance and the exchanges are, by and large, complying with it. The dominant companies are Bitstamp, Coinbase, and Circle, and they are all demanding identification info from their customers and notifying the regulatory bodies of any suspicious activities.