evidence: On the eve of the House vote, I spoke with the person whose job came the closest to the one that Stefanik and others have misattributed to Harris: Roberta Jacobson, a former Ambassador to Mexico who, for the first three months of Biden’s term, served as the coördinator for the southwest border at the National Security Council. "My purpose was to reëstablish the interagency mechanism for making decisions about the southwest border and immigration," she told me. Part of what makes the border so difficult to control is that the task combines domestic and foreign policy, which involve different branches of the federal bureaucracy. Jacobson’s remit was to serve as a point person for the President, convening regular meetings with officials at the Departments of Homeland Security, State, Health and Human Services, and Defense, then reporting them up the chain at the White House. "The process for making decisions didn’t exist when we came in," she said. "It was calls with Stephen Miller in which he yelled at the career officials, and they went off to do what he said, or to try."