This is a big banner ad for the US State Department that says in 100 point font, we are too stupid to figure out ways to actually effectively constrain our enemies, so we will settle for symbolic gestures that will screw American commercial interests, and accomplish nothing.

Stupidity of the highest order. Xeon chips can be sourced by using an intermediary that orders them for some other "legitimate" use. E.g., you go find some company in Germany that makes servers for data centers, and order X amount of Xeon servers from them through an intermediary.

There is no way to stop your adversaries from getting commodities that go into the general flow of commerce. The fact that the US State Department does this indicates that they don't understand the way the world works, more than anything else.