Maternity leave is 12 weeks unpaid.
The one thing I'm truly jealous of. It's one of the worst things about my country.
Some states have slightly better schemes - CA has paternity leave, for example. And many good companies have better, paid maternity leave.
Facilities must be provided for breastfeeding mothers to express, can't be a bathroom, must have privacy and a fridge must be available.
There are daycares that take infants, or there are nannies, or relative care, and some workplaces have corporate childcare for their employees.
We don't have free nursery hours, but there are subsidized early care programs for low income families. Not widely available, but they exist.