well, i suppose he would start with the low hanging fruit - people who are trying to change our way of life, invading our culture, and twisting that culture. i'd say he'd start with illegal immigrants, whether or not they are seeking asylum is not an issue.
in fact, what we could do is create tent city camps, and separate the children from their parents and imprison them both in separate camps, without care as to keeping track of who went where.
maybe that's where he would start.
maybe then, he would start closely inspecting legal, naturalized citizens who are trying to change our way of life, invading our culture, and twisting that culture. maybe he would find excuses to deport them as well.
maybe that's where he would start.