You said, in part: Sorry its not. By law, like it or not any child born in wedlock is by law the responsibility of the Husband.
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This is not the law in every state.
Well it is possible that a state does not defacto view a child born during a marriage as the husband’s child. I can’t fathom a state not having such a law, and if it has changed from that standard, I’d say its something that’s happened in the last 20-30 years.