Here is the heart of our illegal immigration problem
"On immigration, there were things that we know now that we did not know then. Since 1970, there has been an increasing mismatch between the skill levels of the immigrants entering the United States and the U.S. labor force. This, combined with our lack of cultural self-confidence, has slowed the historic assimilation process. Some of this is due to sheer numbers. Much of it is due to the fact that the immigrants are choosing themselves: Half of the immigrants who have arrived in the last decade have come illegally; family reunification drives about 65 percent of legal immigration."