Best I can tell, he is the one that decides.
Remember two things:
1. The Marines report to the President for any mission he has for them. The Marines have already refused a request from Pelosi to augment the DC NG troops at the Capitol.
2. The President can federalize the National Guard anywhere at anytime as he is their Commander in Chief and will be so until 1/20/21 at 12 noon. They can be under his direct control with the stroke of a pen.
“Best I can tell, he is the one that decides”
Can you tell whose side he is on? ( you are much better at internet research than I am. So I’m being lazy.)