Working Abroad Insurance Is Maternity / Health Insurance Worth Buying In Advance, Living Abroad But Want To Have Baby In The US.?

Is maternity / health insurance worth buying in advance, living abroad but want to have baby in the US.? - working abroad insurance

My sister works abroad, but we want the child here in Texas, United States. Is it worthwhile for health insurance, with or without maternity buy in advance? She is not pregnant. I have different posts of insurance agents or companies.