If there's an open DCF case for Patrick where DCF took custody of the kids, your husband may be able to be appointed an attorney in MA (if you financially qualify which you probably would being on medicaid). If he knows which DCF office has the case, he can call and they can open him as a part of their case. If he does get an attorney appointed, they can help him file a paternity action in the juvenile court and waive the fees.

If DCF does have custody, your living out of state might make things more complicated. When a child welfare agency is involved with a child, a home study normally has to be done to send a child out of state, even with a parent. It's under a federal law called the Interstate Compact on the Placement of Children (ICPC). He can qualify for a faster version of that ICPC home study if the child is under 4 or under some other circumstances.