The OpenBSD project at least believes that the US restrictions on the export of cryptography would have impacted them. Its why they banned US developers working on cryptography long ago.
> Of course, our project needs people to work on these systems. If any non-American cryptographer who meets the constraints listed earlier is interested in helping out with embedded cryptography in OpenBSD, please contact us.
> Of course, our project needs people to work on these systems. If any non-American cryptographer who meets the constraints listed earlier is interested in helping out with embedded cryptography in OpenBSD, please contact us.
https://www.openbsd.org/crypto.html