If the US can fly half way round the world to bomb poor people, why can't they bomb Haiti with food and water?

The port is destroyed, the air strip in too small to be effective and the roads are very severely damaged and blocked. Surely if these people are to survive then immediate aid is crucial, and don't say that air drops would cause chaos, its chaos now. If aid is continually dropped until the situation is stabilised then this will at least give these poor people some chance, at present using the above excuses will not in the long term p for a reason why people have died in large numbers, not from the earthquake but from inaction.