A form of Perjury and Fraud that is sanctioned by the State of California. Men who do not find out that "their" children are not in fact theirs within the state's statute of limitations are forced to continue to pay child support. This can take place regardless of evidence provided by the men.
A guy signs a birth certificate because his girlfriend says he's the dad. 5 Years later he finds the children have been seeing their biological father the whole time while he has been paying child support. The state forces him to continue to pay child support regardless of the results of DNA tests.