By the end of Trump’s Presidency, Guttentag’s Trackers had logged a thousand and fifty-eight changes to the immigration system. Early in the process, he gave me access to the Tracker, and I began to report on the human toll of the lesser-known policies, enlisting a team of postgraduate fellows from the Global Migration Project at Columbia’s Journalism School. In the past few years, we have spoken to two hundred people who bore the brunt of these changes, and found more than sixty cases of irreparable harm that resulted, including torture, sexual assault, and death.