It's a global issue that affects every highly educated society. And it's been decade after decade of governments bribing their populations to try and get them to have children. It failed every time. The economic strategy of people who live in post industrial urban centers is just not compatible with a growing population. You can of course look at it from the point of view of rising childcare costs, but that's part of a larger social democratic project. From what I understand the american population will continue to grow via immigration and the country isn't in a situation as dire as, say, Japan.

Ultimately, if there's a problem to be fixed it is the fact public and private finance will have to deleverage themselves somehow once the pyramid topples over. Widening the base is simply not going to happen.