Only a few are speaking out, but I believe a good majority of GOP senators do oppose amnesty, but that's not much in the senate since every Dim supports it.
McCain, Graham, Ayotte, Collins, Wicker, Cochran, Flake, Cornyn, Burr, Alexander, McConnell, Corker, Paul, Coats, Portman, Capito, Blunt, Heller, Hatch, Hoeven, Isakson, Johnson, Kirk, Shelby, Thune, Tillis, Toomey are all on board The Cheap Labor Express.
I count 27 confirmed sellouts.
Some of the others unnamed are questionable.