Mexican immigration has peaked and started to recede.
There are about 12 million Mexican immigrants in the United States. Slightly over half of them are here illegally.
In the past few recession years the in-migration has slowed to a trickle, and the out-migration has picked up. Last year there may have been more people returning to Mexico than came here.
Those who were afraid of being overrun by Mexicans can strike another fear from their list.