As additional context, the United States effectively has internal external borders, i.e. the border patrol has checkpoints inside the borders of the United States to enforce the external borders by looking to catch people who have violated them. This is different but related and complicates the situation.
As additional context, the United States effectively has internal external borders, i.e. the border patrol has checkpoints inside the borders of the United States to enforce the external borders by looking to catch people who have violated them. This is different but related and complicates the situation.