This was actually something Coinbase pitched to investors - the ability for Bitcoin and other crypto currencies to bypass the American legal system, FINCEN etc [1]:
Coinbase, which recently raised $75 million in seed
funding from prominent financial institutions such as the
New York Stock Exchange, said one of the four biggest
advantages of bitcoin is that it is "immune to country-
specific sanctions," citing Russia as an example, in a
PowerPoint presentation put together for investors by the
company late last year.
[1] https://freebeacon.com/national-security/bitcoin-exchange-hi...