Paternity fraud is both cruel and unfair to both the man and the child. Therefore, I believe that DNA testing should be mandatory at birth for all couples, regardless of their marital status. However, there are some exceptions that can be considered. For instance, if a man is already aware of his infertility and he and his wife had to use alternative methods to conceive, then DNA testing may not be necessary in that situation. Nevertheless, the main objective is to ensure that the man knows the truth about his biological relationship to the child.