On the subject of constructing Latin American immigrants as inherently “illegal,” there was a great clip from a 2010 Colbert Report show
http://www.colbertnation.com/the-colbert-report-videos/361456/october-07-2010/indecision-2010—revenge-of-the-fallen—fearstock-com [Video no longer available]
While the video is no longer available, you can read about this clip here.