Why immigrants (legal and illegal) and poor "natives" want Trump's immigration ban

[zen at freedbms.net (Zenaan Harkness)]

"
Thirdly, Borjas points out that illegals dramatically reduce the wages
of legal workers with similarly low skill levels.  These are legal
Latinos, blacks, and poor whites.  Why should companies pay legal
workers when they can get away with paying illegals less?
"

http://www.breitbart.com/milo/2017/01/27/milo-university-new-mexico-full-text/