If a parent has the duty to provide for the support of the parent's child and willfully fails to so provide, the other parent, or the child by a guardian ad litem, may bring an action against the parent to enforce the duty.
Ca. Fam. Code § 4000
If a parent has the duty to provide for the support of the parent's child and willfully fails to so provide, the other parent, or the child by a guardian ad litem, may bring an action against the parent to enforce the duty.
Ca. Fam. Code § 4000