The US already does this, far more than any other nation.
Not just from its government, but by countless, private US citizens.
The very fact that people don't "give us credit" for this, and countless other funding (e.g., World Bank, etc...) is the core problem, not the US itself.
Which is why I find the majority of arguments I see on this board made in great ignorance of the actual facts.
Unfortunately the US can't do anything about its past.
Especially when it comes to the Americas, we have really screwed things up throughout our history.
The question is, will we learn from it?
That's my point simply relabeling the bagging in which our food donations are shipped could make a huge difference in the perception of the US.