“No one wants to hear it, but the flow has already stopped. For the first time in 60 years, the net traffic has gone to zero and is probably a little bit negative.” So says an immigration expert about illegal migration of Mexicans into the United States.
Legal migration has increased in the past five years, thanks in large part to better management of the visa process by American consulates in Mexico. But illegal migration has declined, and not primarily to stronger immigration enforcement by the United States. The major factors are smaller families, better education resources in Mexico, and better job projects in Mexico if you are educated.
These observations from a New York Times article.