AND THE WINNER IS

In the contest for richest person in America,  uncle Billy is still the one,  has some 54 $ billion (54 mil millones en cristiano que alli cuentan distinto) and that after giving some 28 billion in philanthropy!!!   He´s probably also the most generous in absolute terms (though of course is not the best way of measure generosity)

Link to a very good speech from Billy.  Link to a un video realmente bueno de Bill Gates in Hardvard, en ingles, muy recomendable