Basically, the "streaming hordes coming across the southern border" is greatly exaggerated. From this article:
...the number of illegal immigrants in this country, which has declined each year since 2008, is now at its lowest level since 2003, and the percentage of undocumented immigrants likewise is at its lowest point since the turn of the century.
A report from the Pew Research Center shows a decline of nearly a million unauthorized immigrants, to 11.3 million, from 2007 to 2014. An even more recent survey, from the Center for Migration Studies, a New York think tank, indicates that the number of illegal immigrants has now fallen to 10.9 million, a precipitous drop driven largely by declining arrivals from Mexico. In fact,according to Pew, for the first time since the 1940s, Mexican migrants have been leaving the United States at a greater rate than they have entered.
The reasons include a stronger Mexican economy, the recession, and better border enforcement.
...the number of illegal immigrants in this country, which has declined each year since 2008, is now at its lowest level since 2003, and the percentage of undocumented immigrants likewise is at its lowest point since the turn of the century.
A report from the Pew Research Center shows a decline of nearly a million unauthorized immigrants, to 11.3 million, from 2007 to 2014. An even more recent survey, from the Center for Migration Studies, a New York think tank, indicates that the number of illegal immigrants has now fallen to 10.9 million, a precipitous drop driven largely by declining arrivals from Mexico. In fact,according to Pew, for the first time since the 1940s, Mexican migrants have been leaving the United States at a greater rate than they have entered.
The reasons include a stronger Mexican economy, the recession, and better border enforcement.