That does raise the question of who has the authority to enforce the law when the local police department refuses to do so.
County Sherriff ---> State Patrol------> Feds?
If George Wallace was still around, I'm sure he'd know.
I may be misremembering this, but I am pretty sure that the pres federalized the nat'l guard in order to bring them in. Sorta pulled the rug right out from under Wallace. Is this what you recall?