That link gives a statement. They don't say that there is a problem. You are assuming there is an issue here. That makes you look like a dumbass.
Taylor Griffin, a McCain-Palin campaign spokesman, said Palin followed state policy allowing governors to charge for their children's travel.
And here is why there is an article:
"There was no valid reason for the children to be along on state business," said Knowles, a supporter of Democratic presidential nominee Barack Obama. "I cannot recall any instance during my eight years as governor where it would have been appropriate to claim they performed state business."
There did I type slow enough for you?