[yarddog]

A proper use of the national guard was in the early 50s in Phenix City, AL.

The local authorities were so corrupt that it was necessary to declare martial law.

[Publius]

The only way a federalized Illinois National Guard or 101st Airborne Division could be used to maintain order in Chicago would be the declaration of martial law that you mentioned. Rahm Emmanuel would have to be replaced by a military general, preferably a black one, else the commanding general ruling Chicago would be referred to in the press as the gauleiter.