[as_i_fall]

I imagine very few people would be interested in smart contracts if it became a defacto legal standard in the US and Europe that these contracts are unenforceable.

Of course this doesn't address contracts being written out of Russia or traditional financial havens, but how valuable is a vehicle which can't be used to move assets into or within the US or Europe?

I think the question of enforcement is the wrong one.

[sneak]

Smart contracts are already unenforceable via the existing legal system. It's the blockchain that enforces them, and it will continue to do that regardless of their legal status.