Regulatory treatment of cryptocurrencies continues to evolve, but because the technology transcends global boundaries, the influence of national regulators is limited. Since cryptocurrencies were conceived specifically to avoid governmental controls, its uncertain whether regulation efforts will be successful.
With a strong desire of the government can always prohibit the use of bitcoin. The assertion that bitcoin is an anonymous currency is not true. Any steps on the Internet leave their traces. On this trail you can always find the user. What we do not see effective action from the government suggests that the government does not want to do.