The dark unspoken part? They don't need to worry about you distributing it domestically, because anyone using it domestically is subject to extralegal rendition and rubber-hose cryptography without a warrant.
That's been formally legal since the passage of the PATRIOT Act (and from the infinite renewal of the NDAA), but even Lincoln ended Habeas Corpus on a whim when he found it convenient.
We don't live in a constitutional democratic republic, we live in a totalitarian surveillance state LARPing as a constitutional democratic republic.