When this dumbass law was made, Debian responded by setting up a repository just for software affected by it, which would only be available on non-US servers, but still accessible worldwide.
The "munitions" had already been exported of course, so it was pretty much useless.
in the 1990s, the US government classified 128-bit SSL encryption as a "munition" under ITAR, putting it in the same legal bucket as missiles and tanks.
As a result, Netscape and Microsoft had to develop two entirely separate versions of their web browsers: