You seem to imply that "undocumented immigrant" isn't actually less factually descriptive or a euphemism at all, but a term that refers to a slightly broader ca

You seem to imply that "undocumented immigrant" isn't actually less factually descriptive or a euphemism at all, but a term that refers to a slightly broader category than "illegal immigrant." I don't know if that's a correct categorization, but given that framing the relevant differences are not at all about one "descriptive" term and one "euphemistic" one.