Why doesn't the government pay for the time spent raising children (for example at 3x minimum wage), and cover expenses (e.g. rent, food, clothes, education, sc

Why doesn't the government pay for the time spent raising children (for example at 3x minimum wage), and cover expenses (e.g. rent, food, clothes, education, school uniform etc.)? I think then for some women it would be more profitable to raise kids rather than work at Walmart for example. If that is too expensive for the budget then you could grant citizenship to families with many children from developing countries.