What about Finland or Sweden? 2.1 children per woman is the steady "not declining" rate... and Scandinavia tends to have people pointing there and saying "this is how you do support for new families..."
Sweden is at 1.66 children per woman and Finland is at 1.37.
No one thing will be sufficient, but eliminating obstacles to child rearing is the only solution governments have short of nonsensical interventions (or just accepting the situation).
Sweden is at 1.66 children per woman and Finland is at 1.37.
United States is at 1.64 and Canada is at 1.40.