Okay, I'm assuming you mean "most places don't have a problem with insufficient population growth", given my post above. So the reply below is on that basis:
The US doesn't. But most Western nations and some developing nations have crashing birthrates. Some countries like Canada fully supplement the losses through immigration; others don't. Some are fine with that and others try desperately to encourage native births.
I'm not going to speak of the cultural implications here, just that it's rarely in a nation-state's interests to have a declining population (sure, it may be better for the world in the long run - I think we all agree there - but I'm talking about the desires of national governments, not what's responsible or good for the planet).
More relevantly, population growth has been something that governments have almost always tried to encourage, historically. Even now, world economies are still largely based on growth tied to population growth.