First off, it's "martial law". Second, martial law has NOT been declared for NO - just dusk to dawn curfew. Lastly, the police and Nat'l Guard have more important issues than looter to deal with right now.
MARTIAN LAW
You see, that's part of the big problem here? Most everyone should have gotten out when warned repeatedly. Now the police are tied up rescuing these people that should have left.
Looters are like locust if left alone. They'll take everything that hasn't been damage, and will even take the damaged stuff too. Including hospital fixtures, emergency supplies, water that should be allocated, now reports of gun stores are being looted, etc.
From what I recall, after Hurricane Celia in 1970 we had martial law declared immediately after the hurricane passed and a curfew at dark. What's taking the bozo mayor so long to ask the governor to declare martial law?