That policy preserves the constitution and enforces the law. The mother who was seeking to be American by getting knocked up loses her gambit
However, in the case of an infant or juvenile, the child should likely go with the parents.
But, upon achieving his majority, he would be free to return to the U.S. and claim citizenship. Without benefit of chain migration, though.
———the child should likely go with the parents.-——
Only if there is a sworn affidavit that in the event of illegal entry, the child will stay and the mother deported. To speak of parents is not necessarily accurate
the game must be very hard ball