Allow married couples with 3 or more children to claim exempt from income taxes while 3 or more children are claimed as dependents.
This will promote families to contribute to the replacement rate of our society. As well as incentivize working on a marriage and keeping the family intact.
Savings from income tax exemption will allow families to better care for their larger family. Parents could afford healthier food or tuition for higher rated schooling. This could also allow more families to convert to a single income household and have a stay at home parent.