American Automobile Assemblers Union ("AAAU") is a large union whose members consist of various assembly line workers who put automobiles together. The AAAU is the official labor union of the assembly line workers who work at Ford's factory in Detroit. After a large recall in Ford trucks, Ford decides that they will not give their workers a yearly raise and they will raise their monthly premiums for healthcare. The enraged employees strike for better wages and healthcare. During the strike, Ford hires workers to come in and replace the striking workers. Ford hires exactly as many workers as those who were striking so they can keep production constant. After two months of striking, Ford and AAAU come to an agreement about wages and healthcare premiums which ends the strike. AAAU tells Ford that they must fire the "scabs" who were hired during the strike so their union members can have their jobs back. Ford says that they aren't going to fire anyone and they don't have to. Who is right and why?