Exactly right. I did say that exploitation of illegals was one minor reason. A complete list would have been just like yours, with the order changed a little. I don't see that you missed a thing. My order would have been 6,1,3,2,4,5.
I agree that #6 should be at the top- in fact if all the other situations didn't exist I would still be against illegal entry, so that should put it at the top.
I wasn't picking on your post, when I have a little free time I try to get as many facts posted on these threads as I can to make more people aware of all the issues.