Most of the people in the United States are descendants of immigrants.

[Spider Jerusalem]

9. I'm the descendant of colonists, mostly, not immigrants.

My earliest ancestor in what would later become the United States arrived when there were fewer than a thousand English colonists in Virginia, years before the Mayflower. There's a subtle difference between colonists and immigrants: Colonists seek to establish a society like the one they left, immigrants are coming to an already-established society which may be of a different culture.

Opposition to immigration is fundamentally about opposition to people from other cultures; it always has been (from Ben Franklin railing about "Palatine boors" in the 1700's, to the 1800's establishment of lineage societies like the Mayflower Society and the DAR as a way of saying "we who can trace our ancestry back to the beginning are Real Americans", to Teddy Roosevelt asserting that "there is no room in our country for hyphenated Americans", to Minuteman yahoos with bumper stickers that say "welcome to America, now speak English" setting up their own border patrols in the hope of catching some hapless border-crosser.