Child support

Agreed, he made the kids and needs to support them. If he wants to see them he needs to take her back to court to renegotiate their parenting plan. If it's in the plan that he gets visitation and she's not complying, then that also needs to be reported to the court.

I'm sure it's hard being in your position but he made those kids therefore he needs to support them. 

I'm going to assume she uses the kids as an excuse not to work or at least not to pursue a high enough paying job to even provide for her kids and uses the child support as her income resulting in the children not benefiting from their father's hard work. 

Wow! That sounds really tough. Unfortunately when we accept a partner with children this is part of the package. The only way to get things changed is through the courts, sometimes there may be even a way to get the percentage of payment reduced. We will never understand where all the money goes but don't harp on that because that is completely out of your control. Being there for him is the most important part, try not to become another source of conflict for him. Trust me when I say, they feel guilty about every part of it. They feel guilty because they can't wake up to there kids every day or spend holidays with them. Support him, because that is the part of the situation you do have control over.

I understand you but all actions have consequences, his horny ass didn't know how to put a damn condom on? Don't just be mad at her be mad at his irresponsibility too.

Show your husband you support him through this tough time. Life is rough but it could always be way worst.