CRTICAL CONTEXT I forgot to add
The president alone can't just call the national guard
The governor of the state has to ask or possibly other things but the President can't sent them on their authority alone
So likely the governor of California asked trump to do this, and trump didn't just do this because he decided
This is important because you may either see it as:
(THERE ARE MORE THAN TWO SIDES)
Rare California W
Or
Why would the governor do that!?
But be aware trump is not doing this suddenly