Ascribing a single actor and single motivation to "US government" is a common mistake (usually made by non-Americans). It misses the multi-polar nature of the

Ascribing a single actor and single motivation to "US government" is a common mistake (usually made by non-Americans). It misses the multi-polar nature of the US political and lobbying/advocacy system, and the fact that US policy is usually emergent. The reason there hasn't been a crackdown is that Bitcoin is traceable and intermediaries serving US citizens are abiding by Know Your Customer banking rules.