Shameful. And you wonder why there is a mens rights movement.
The laws state that a child born with in the marriage is the child of both parents, DNA results not withstanding. This is a law passed years before there would be ways to definitively track genetic heritage.
The laws may need to be changed, but this is what they are now.
As it sits the child is his because legally the child is his, not genetically.
I would say the wonder is why more men don't support it, but I know why.
The mother should be in jail for criminal fraud.
He could try suing the biological father for partial remuneration...now that would grab some headlines!