TL;DR: Last Friday the US government ordered Anthropic to block all “foreign nationals” — including non-citizens inside the US — from using its new Fable 5 and Mythos 5 models. Since you can’t separate a green-card holder in California from a citizen in real time, Anthropic shut the models down for everyone. It’s the first time export controls have hit an AI model itself rather than the chips that run it. The under-discussed part: a nationality-based access rule that geography can’t enforce push...