The polo magnate who adopted his girlfriend in an alleged attempt to protect his fortune from a lawsuit must now battle with his teenaged children who want the adoption thrown out. John Goodman adopted his 42-year-old girlfriend in the fall, giving her a share of the more than $300 million trust he established for his two biological children -- a move that critics said was a ploy to save millions for himself if he loses an upcoming wrongful death lawsuit stemming from a car accident that killed Scott Wilson in February 2010. The guardian of Goodman's children opened another legal...