re: Should a paternity test be mandatory?

quote:

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If a woman shows any eagerness for you to sign the birth certificate, don't sign.

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So if a man signs a birth certificate even though he (unknowingly) is not the father, what are the legal ramifications if it is later revealed that he is not the father?

What if a child is born that was clearly fathered by a man of different race and causes the husband to take immediate legal action, like the day the kid is born? How does that change things vs. finding out later?