Legal ≠ moral. Both instances of mobilizing the national guard against the wishes of the states' governors were illegal, but one was moral and the other is not. One could argue that by breaking the law the first time a precedent was set that allowed it to be done again for a less noble cause, but I disagree. The fact that it was possible for Eisenhower to federalize the national guard without the state governor's approval in the first place means that nothing would stop it from happening in the future regardless of whether or not a precedent was set.

The drug that has the most negative impact on empathy is money, and that is his primary addiction.

Isn't Chani a non-believer in the movie, at least at first?