I think that the dislike "conservatives" have for illegal immigrants is that they are not lawfully entitled to the same privileges as citizens of the nation yet sometimes take advantage of what it has to offer. It drives costs up for the citizens and people who have earned their place in society, yet people who were never supposed to be there in the first place are consuming (sometimes precious and limited) resources. Yet at the same time, since no system is perfect and every society flawed, there are genuinely decent people within that same nation, who are citizens, yet are not entitled to the resources that some illegal immigrants consume. Illegal immigration is thus frustrating to "conservatives", as they see the unfairness of it. Myself, while I acknowledge it does cause problems, hope that whatever life these people manage for themselves is better than what it would have been had they not fled. We all deserve to be treated like human beings, but only the elite get that treatment. It's hard sometimes not to take what we have for granted.
