The illegal immigration issue is not difficult, complex, or nuanced. If they came her illegaly, they need to leave. That's it end of Story
"But what if they've been here for 10 years???"
They need to leave.
"But what if they haven't committed any other crimes???"
Leave.
"But what if they have a family???"
Leave. This isn't hard at all. We have laws in this country. You broke the law. You don't belong here. Nothing personal, but get out.
It should not be hard for elected Republicans to articulate this point. If they don't have trouble articulating it — if they can take any position on illegal immigration except this one — they can also go. That's not complicated either.