This story was originally published by ProPublica. For the first few weeks after he arrived at the immigration detention center in Winnfield, Louisiana, 18-year-old Elder Chavez was wide awake most nights, listening to the creaky sounds of the bunk beds and to voices of dozens of men, also sleepless, around him. He suffered terrible headaches and would finally doze off around 4 a.m. — just when guards would begin to summon the detainees for breakfast.