I apologize for all these posts about this topic. It really has me obsessed, as you can probably tell since I'm posting on a Saturday night. I do believe, though, that there is some good news.
I downloaded the government's response to defendant's motion to dismiss in the Tornado Cash case:
#521222
Based upon the government's own submission, it seems that lightning products are not money transmitters under federal law. The relevant statute is cited by the government in the opposition papers.
31 C.F.R. § 1010.100(ff)(5)(ii)(A) contains an exception for "network access services".
As the government explains, this exception
is typically used in the law to refer to a provider of access to a general network such as the Internet. See, e.g., In re WorldCom, Inc., 371 B.R. 19, 23 (Bankr. S.D.N.Y. 2007) (describing WorldCom’s provision of “network access services” to “computer networks,” which were “in turn linked to other computer networks, collectively forming the global digital communications network generally described as the Internet”)
It seems that the lightning network is exactly the type of general network contemplated by the statute exception. Those who provide access to the network fall under the exception to the money transmitter rule.
Therefore, the FBI Advisory could be seen as intentionally misleading, and even more puzzling.
Keep in mind that nothing contained herein should be construed as legal advice.