[Kevin]

You don't know the whole story. While I agree -- people should *always* pay their child support, there's often a reason why they don't. Mom could have denied dad visitation and brainwashed the kids into thinking dad's a serial killer for all you know.

I'm sure that's not your situation, and really, if you wanted to go after your kids' deadbeat dad, you could hire an attorney to do so for you (or even work on contingency).