Iowa has a budget of $8.5b, and 339,000 people bellow poverty line, that's counting adults too. So $40 a month for the 3 months of summer multiplied by the pop below poverty is $40.6m, or 0.04% of the budget. That is a drop in the fucking bucket, even before trying to figure out how many of those 339,000 people are children eligible under this program. For reference, 1/5th of the Iowan population are minors. And this is a federal program, so Iowa wouldn't even be paying for the full bill.
https://en.wikipedia.org/wiki/List_of_U.S._states_and_territories_by_poverty_rate
https://www.census.gov/quickfacts/fact/table/IA/PST045222
Iowa attempts to force women to have children against their will with a 6 week ban, and restricts it by only having a small handful of providers, then denies them the resources needed to raise the children that result from said restrictions. This means unwanted, unafforded children are born to suffer. They pretend this is a good deed.