The midwife pulled on her latex gloves and flattened her measuring tape against the young pregnant woman’s exposed belly. It was measuring large for 36 weeks. “Maybe it’s a big baby,” said the midwife, a redoubtable woman in pink scrubs named Nancy Symgambaye. Or it could be twins.” All were risky scenarios for any pregnant woman, let alone Taiba Baraka, a 26-year-old Sudanese refugee. Ms. Baraka looked nervously from the bed as Ms. Symgambaye continued to examine her.