Originally Posted by Damien

It's not part of the job and nor should it be. Credit to him for doing it but it's not a measure or the job of a President. The Government should be the ones providing funding for natural disasters because they can deal with the scale of funding required, such as the $8 billion congress passed.

As for other Presidents we don't usually know until they've left office and it's generally only shown on tax returns. Obama's donations seem to have mostly been directed a children's charities: https://www.forbes.com/sites/danalex.../#49db5714459e. He also seems to have been helping his Joe Biden as he struggled with his finances over the cancer treated for his son.