NEW : Father and son arrive in Orlando at 6 pm ET from Brazil . NEW : The father is a former Brazilian soccer player, the son was born to an American mother who grew up in Rio de Janeiro. Goldman was battling the family of the boy 's deceased mother for custody .
NEW : Father and son arrive in Orlando at 6 pm ET from Brazil . NEW : Lawmaker reads dad 's letter offering `` sincere and humblest gratitude '' David Goldman and son en route to U.S. for first time in five years . Goldman was battling the family of the boy 's deceased mother for custody .