This is a different situation, but there were a couple of other stipulations in the agreement that could cause removal. For instance, if the body was cremated, you had to swear that 100% of the cremains would be buried. No keeping a memento of the person in a little vial. If they discovered that less than 100% was buried, you would have to remove and inter elsewhere.
I don't know if it's the same for all national cemeteries, but that is the situation in Arlington.
Interesting. I do think wives alongside deserve to be there, but what was RFK, to say nothing of Teddy, doing there, other than nepotism?