[doug from upland]

Yes, but the law has changed since then. Faubus was “preserving the peace.” In this case, it appears that the governor can act “in response to natural or man-made disasters or Homeland Defense missions.” This is clearly a Homeland Defense mission. I don’t think this has ever been tested. It almost looks like the case can be made that they are under command and control of the governor in that circumstance.

[Publius]

They are under the command of the governor unless and until the president signs the order that federalizes them and places them under his control. The governor at that point has no recourse, and the guard units must obey the president.

[ansel12]

I guess a Governor can tell the Guard what to do, until their Commander in Chief tells them differently.