NEW : Screenwriter defends film , says no key moments of the story were altered . In movie , two Connecticut lawmakers are seen voting against ending slavery . The scene was edited to show them supporting it. Rep. Joe Courtney sends a letter to director Steven Spielberg .
NEW : Screenwriter defends film , says no key moments of the story were altered . In movie , two Connecticut lawmakers are seen voting against ending slavery . History shows all four Connecticut representatives voted yes on 13th Amendment . Rep. Joe Courtney sends a letter to director Steven Spielberg .