How is this possible? Well, remember that it may not be. The figures should be taken with a dose of skepticism.
The US actually has very generous social services when it comes to medical care for pregnant women and their babies. CHIP and Medicaid cover pregnant women up to 200% (~$30K) or sometimes 300% (~$50K) of the federal poverty level.[1] Waiting lists are non-existent for most states as they have an exemption for pregnant women or newborns..[2]
[1]https://www.medicaid.gov/chip/eligibility-standards/index.ht... [2]https://www.medicaid.gov/chip/eligibility-standards/waiting-...