...wish to have their children born in America, given their current citizenship in the glorious and harmonious PRC? Why would they choose to spend so much on an "insurance policy"!
Just sensible planning really.
"SAN GABRIEL, Calif. — … For months, officials say, the house was home
to ‘maternity tourists,’ in this case, women from China who had paid
tens of thousands of dollars to deliver their babies in the United
States, making the infants automatic American citizens."
"Immigration experts say they can only guess why well-to-do Chinese
women are so eager to get United States passports for their babies,
but they suspect it is largely as a kind of insurance policy should
they need to move."