Much of what Illinois courts do to get noncustodial parents to pay child support focuses on punishing the parent for falling behind: garnishing wages and even jail time are options. This works to some extent, but many observers note that locking up a parent is not going to help him or her raise the money to get up to date on child support.
The traditional notions of child support and spousal support were very gender-specific. In both cases, it was assumed that men (as the higher earners or only earners) would make monthly payments to their ex-wives and pay child support on behalf of their children. Of course, it was also the norm for women to be granted full custody.