According to the world survey: https://www.loc.gov/law/help/cryptocurrency/world-survey.php
Many of the warnings issued by various countries also note the opportunities that cryptocurrencies create for illegal activities, such as money laundering and terrorism. Some of the countries surveyed go beyond simply warning the public and have expanded their laws on money laundering, counterterrorism, and organized crimes to include cryptocurrency markets, and require banks and other financial institutions that facilitate such markets to conduct all the due diligence requirements imposed under such laws. For instance, Australia, Canada, and the Isle of Man recently enacted laws to bring cryptocurrency transactions and institutions that facilitate them under the ambit of money laundering and counter-terrorist financing laws. This is one of the reasons why government will not take the risk on accepting cryptocurrency as global money.