immigration talk

With all the hubbub about the large marches that happened this weekend and the stupid marches by high school students still going on, I felt I had to opine. Mainly, since everybody is stating that Latinos (ie Mexicans) are "taking jobs that Americans don't want" can we now safely do away with the welfare system? Since Americans now have the option of eschewing work because they feel it is beneath them, do we really need to subsidize them and their life-style decisions? It only makes sense to me that if we actually have 12 million illegals doing these menial jobs, then there are jobs to be found. Think about it and try and tell me that this question doesn't really reveal a lack of candor about the whole debate (and the welfare system).