In a nutshell, this show presents itself as being a general news broadcast, when in fact it's almost exclusively about illegal immigration: even when halfway through they switch to other (often related) topics, they continue with the "viewer mail" and "polls," which continue to be about illegal immigration.
I'm not an expert, by any means, but even I could recognize some of the fear-mongering as complete fabrication. For example, the "NAFTA Superhighway" (in the sense of a separate highway running through the United States from Mexico to Canada) is a complete myth, as is the "North American Union" (in the sense of America giving up its sovereignty to the point of even having a different currency). However, even though there is no truth to either of those rumors, that doesn't stop Lou Dobbs from reporting that "people are outraged" about them.
I guess using the "people are outraged" strategy you can promote any rumor you want, even if you KNOW that rumor to be false: after all, you're merely reporting that other people are saying it.
This may just be the single worst news show I've seen in my life.
If you have further interest, here is a report critiquing some of the more questionable claims this show (and related ones) makes about immigration.