I actually agree with Ronny....
I heard of a billionaire who gave a speech to the graduating class of a high school and on the spur of the moment decided to endow a scholarship paying the college tuition of every student that graduated from that high school in perpetuity. The grad rate for the high school skyrocketed and has stayed in the stratosphere. If I had a few billion lying around I think that's how I would spend it, funding college educations for poor US students.
Money tends to get lost in the third world, and we're already throwing our mental patients out in the street. We need to clean up our own back yard.