Leigh Adelmann was extradited from Arizona to a Missouri jail for nonpayment of child support for a child that wasn't even his. The courts and prosecutors were aware of this, but DIDN'T CARE. If he gets behind again, he risks going to jail again.
The feminists have ratcheted up the laws against men to such an outrageous level that paternity fraud is not just ignored, but routinely rubber stamped by the courts. Whether one agrees with the concept of child support or not, virtually everyone can agree that jailing men for child support over children who are not theirs is morally wrong. Men are routinely sent to jail for falling behind on paying child support, even though debtors' prisons in the U.S. were mostly eliminated in the mid-nineteenth century.
The family courts and laws are set up in such a way that makes it very easy for a mother to collect child support, and very difficult for a man to avoid it. If a couple was married, the default law is that the man will be required to pay child support for any child born while they were married. In order for a man who isn't the father to escape this outcome, he must obtain a paternity test and take a series of legal steps in court. Most states only allow a short window of time for a man to do this. If a man is not aware of the child, which he may not be if his wife or former wife doesn't notify him of the child right away, he loses all chance to fight the child support, and will be on the hook for hundreds of thousands of dollars for the next 18 years until the child becomes an adult.
Courts routinely order these judgments even if the man is unaware what is going on. A March 2003 Urban Institute study commissioned by the California Department of Child Support Services (DCSS) found that "most noncustodial parents appear to be served by 'substitute' service, rather than personal service, which suggests that noncustodial parents may not know that they have been served."