Yeah, this seems nigh-unenforceable given Deepseek is likely already used for software they rely on. Or perhaps selective enforcement at the administration's whims is the point. Par for the course.
I work for a bank, and local models are banned. I have been waiting for Opus 5.5 to be enabled, and it’s still being evaluated. Things take their time, models are evaluated, and risk assessed. There is nothing new here. And I am pretty much certain such practices have been in place in critical US agencies since a while.
A blanket ban is nothing more than a desperate attempt to delay the inevitable.