You don't need no guarantee nor even trust if you have openweights, that's the beauty of it.
The real question is: what guarantee do we have from Trump that he won't pull away the software (and hardware) our society is built on?
Previously we could pretend to rely on the international order as shaped by the US itself, and as an extension on the guarantees of the US president. But with Trump, even Xi sounds like a standup guy.
So as Europe, we must scramble to disentangle the core of our societies from AWS, Google, Microsoft, Apple, etc. etc.