The rule of law is important because it states that all citizens are subject to the law. Monetary status or position doesn't change the law or being subject to it. The constitution limits the military's power because the president is the head of the military. He or she is the one who can declare war. Also, members of the military arts still subject to the law.
Yes this is why all around the pacific ocean there are plate intersections and why the area is called the "ring of fire."