I take it you mean Jimmy Carter because Americus, Ga is the HQ for Habitat for Humanity.
I think both Billy Carter and his father past from pancreatic cancer. It does run in families. Like diabetes and bone cancers in my own.
Jimmy Carters may have metastasized from his liver?
Cancer Sucks. 4 in my family in the last 10 years have lost this life to it. All 4 were believers in Jesus too.
So sometimes, it just does does not get any better then that.