When foreign actors commit such an act from outside the country, and their government isn't cooperative about stopping/punishing them, that's exactly the kind of thing intelligence agencies should be involved with.
Certainly not. I want US intelligence agencies to take action against foreign threat actors to reduce their capacity to cause harm to US citizens and infrastructure.
So if the FBI can arrest them, they're criminals and we should follow criminal procedure, but if the FBI says they can't arrest them, then we "take action" (what action)?
The original author said: "I don't want the NSA to perform domestic civilian law enforcement functions"
In other words, the FBI (and police, etc) perform domestic law enforcement, following criminal procedure. The NSA, CIA, etc handle non-domestic (foreign) threats, in whatever manner they see fit.
