High taxes at every level + declining value of $ + increasing costs = reduction in family size as both couples work.
Without cheaply made Chinese stuff as placeholders for a middle class experience, it would even be worse.
Add on huge educational debt and fewer jobs, and you have an explanation of the state of things.
In many poor countries, they have lots of kids, treasure them and don’t chase paychecks.
Forgot to mention: Encouraging families to have that 3rd kid will encourage 1 child families to have that 2nd one.
Unless:
1) You are wealthy, which is rare, and often doesn't occur until you are older, or
2) You are on the dole that taxpaying producers are being bled every more heavily to pay for. Good thing those payments are often inflation adjusted, huh?