Are Americans consuming too abundant of the world's resources (oil, metals, wood, food, etc)?
Answers:
Americans are probably using more than their pro-rata share. However, when determining defensible allocation of resources you own to look at more than in recent times one perspective. For example, does an over-populated country own a right to as tons resources as they can consume? If they do not address issues near over-population and hunger, do they enjoy a right to emergency resources they don't earn? Is international welfare and charity understandable if the primary problem--that is, too several nation vs. available resources--goes unaddressed?
Hunger, famine, disaster and disease are grim things, but they are not the root issue. When you own a population i.e. not sufficiently expert to support itself on the resources available to it after you are going to hold extermination and suffering. Furthermore, the more citizens here are the more ethnic group will die and suffer when a disaster does pocket place.
Over-population is the #1 issue threatening mankind's survival.