stop immigration which is stealing our jobs.
This is the Lump of Labor Fallacy. Immigrants increase the supply of labor, but they also increase the demand for goods and services, and generally do so disproportionately thus reducing unemployment. This is not just economic theory. When Poland joined the EU, nearly every country threw up barriers to Polish laborers. The exceptions were Britain and Sweden. Can you guess which two countries had the greatest reduction in unemployment over the next few years?
If you walk down a street in San Francisco, you will see more brown faces than white, and hear chatter in several languages. It has one of the highest immigrant populations of any major city in America, and one of the lowest unemployment rates.
The notion that immigration causes unemployment is one of those things that is "simple, obvious, and wrong". It is a real shame that the Democrats didn't stand up to Trump on this issue (and many others) and speak the truth. Instead, they just tried to go "stupid-lite" and lost, because you can't out-stupid the Donald.