http://nypost.com/2017/08/04/why-shouldn...or-the-us/

The immigration reform bill that Sens. Tom Cotton and David Perdue introduced Wednesday — the RAISE Act — won’t become law anytime soon. But it’s a milestone that’s going to change the way we think about immigration, and will be the biggest issue in 2018 and 2020.
There are two simple principles behind the bill. We’re going to admit people on the basis that they’ll make Americans better off. And amnesty is off the table....

Even if immigration on net is an economic zero, it still creates winners and losers within the United States and amounts to a wealth transfer from poor to rich Americans. Borjas reports that increasing the immigrant flow by 10 percent depressed the earnings of native-born Americans by 4 percent between 1960 and 2010.
These costs are most heavily felt by African Americans, the most fragile group of citizens, whose unemployment rate is nearly double that of whites, and a 10 percent increase in immigration was associated with a 5.9 percent reduction in the black-employment rate.
In addition, a comparison between current immigrants and native-born Americans misses the opportunity costs of doing better still with higher-quality immigrants. Why not the best?...

Part of this article points out why many legal hispanics supported Trump. After spending years in the system to get in legally, they found they were competing for jobs with those who decided to piss on the system and come here illegally.