The first years after the war were confusing for everybody. The country had been effectively destroyed,news about German crimes slowly came out, nobody knew how the Germans would respond to occupation. It's no wonder it took years to sort things out.
No matter what people in DC were planning I have never heard from people who lived then about Americans getting in the way of people trying to rebuild.
Because the Americans that people in Germany interacted with weren't making the decisions. Use Google. Research it. It's not a controversial topic in terms of historicity. Germans as a matter of deliberate policy were prevented from getting the food they needed.
No matter what people in DC were planning I have never heard from people who lived then about Americans getting in the way of people trying to rebuild.