Who defends the defenders?

I'm curious about governor's who adamantly insist they DO NOT want federal mercenary forces in their states. I assume many of us are aware that each state has a national guard that is answerable to their state government. If a state is being invaded by a foreign and violent force, why are the national guard not there to protect its citizens from violent outsider attack? Is this a reasonable question?

The End of Knowledge

"it is easy to centralize power but  impossible to centralize all knowledge which is distributed  over many individual minds... Unable to ascertain what is in  the minds of many individuals,( the state ) just try to  control and stereotype interests and beliefs by education  and propaganda. But this attempt ( by the state) to exercise  power over minds must destroy the last possibility of finding out what people really think, for it is clearly  incompatible with the free expression of thought, especially of critical thought. Ultimately it must destroy knowledge;  and the greater the gain in power, the greater will be the loss of knowledge."  -  Karl Popper.