Iowa law (and the law of many other states) automatically assigns paternity to the husband, even if he can prove it isn't his. Man splits up with wife but never files for divorce. 15 years after he last saw her, she has a child, and the state tracks him down and demands child support. He argues it isn't his. The state says it doesn't care, pay up and keep paying for the next 18 years.
Thousands of dollars are donated to fight it and today he wins..
It was an administrative appeal to the department that was hounding him for the child support payments, it was not a court decision. Whether that can be used for other similar cases in the state remains to be seen.
And in the end, the woman will NOT have to pay what HE would have had to. All Iowans will pay the share of that special snowflake.