The problem my friend is it is ILLEGAL! All the other issues are butter on the rice. By rewarding illegal entry, the US in effect punishes those that seek to enter the United States through legal means. What's the point of even having immigration policy if it is not enforced?
That would be my ad in a campaign. Warn other ethnic groups that tend to come legally, that their families and friends entry into the US are being jeopardized. Use the movie theater analogy. A theater has only so many seats and tickets. People who come here illegally are like people who cut the line to the ticket office. By the time you get to the office, all the tickets are gone thus your opportunity to get into the show. Opportunity to come to the US as an legal immigrant should be fairly shared with other parts of the world. Illegal immigrants coming in from Mexico and Latin America are jeopardizing legal immigrants from Europe, Asia, India, Africa and other parts of the world by hogging an unfair share of the entrant slots available.