[usadave]

There is not the smallest doubt that these immigrants contribute enormously to North American economy -10 billion dollars a year, according to the Academy of Sciences of United States and to the immigrants’ countries of origin.

I notice that the article said that this money was contributed to the North American economy and not to the American economy, meaning that most of the money was mailed to relatives in Mexico by the illegal aliens. This isn't helping the economy of the United States very much.

[Clemenza]

Not entirely true. Much of that money does go to buy American products. Mexican Wal-Mart is filled with products made by American companies, although the factories are somewhere else in postindustrial America.