I agree with Mr. Feitelson that a better course of action would be to file a custody case. However, it is not clear from your question whether...

If he is asking to modify the divorce decree in order to ask for more property or spousal support, property settlements are not usually modifiable...

The state could pursue child support from your son if his ex girlfriend signs up for services from the state or services directly from child...

She didn't file but she had gotten a settlement from her mom ,would That be part of the marriage settlement ?

Do you mean settlement or inheritance? In Iowa, gifts or inheritances are generally not subject to division in divorce unless it would be...