It started out in 2016'speech saying " Trump commenced his 2016 campaign claiming Mexico was sending rapists and murderers to the U.S., promising to build a “great wall” across our southern border — one that Mexico would pay for. In fact, only five miles of new border wall has been constructed, with the rest replacing existing border barriers. And, of course, Mexico did not pay for it".
President Trump's administration has waged an all-out assault on the very few options available to foreign nationals to legally immigrate the United States. Trump in early 2017 banned immigration from 13 countries on dubious national security grounds, and has subsequently banned the issuance of temporary work visas, banned the issuance of employment- and most family-based immigrant visas, urged the abolishment of birthright citizenship, gutted our legal asylum system, slashed our refugee program to virtually zero, abolished DACA, cancelled TPS, implemented punitive policies separating children from their parents, reduced the number of foreign students in the US, increased processing times and denied applications for legal status that are approvable under existing law and previous interpretations.--Courtesy of the AZ Mirror
In April 2018, the Administration announced their “zero-tolerance” policy, which resulted in the separation of thousands of children from their families. Two months later, a court mandated the immediate reunification of the 2,737 children the Administration had identified as separated. However, an OIG report released in January 2019 said that “thousands” more children than previously recognized had been taken away from their parents. https://americasvoice.org/blog/2019-mid-year-review/
Then in 2019, in limited H1B visas and announced later that he now going to cut visa lotteries and family based immigration visas. So that meant that in the future if you have a loved one overseas that you want to petition to come legally to America your bet on it. For generations and years this was how our ancestors came in through being petition by family. The sad reality was this was that this immigration system is so broken a family based petition from the time it is approved to the time you can get an actual consular interview takes years or decades of waiting For an immigrant to be legal permanent resident green holder to finally arrive at the United States with this Immigration broken system takes ages. Sadly, it is a known fact that sometimes when the USCIS finally sends the notice of interview to the applicant or petitioner the person might already be deceased as it is already too late.
There are so many realities attached to this discussion on non-documented immigrants, the reasons of, the policies but it boils down that this President is not pro immigration but nationalism. Nationalism is a system created by people who believe their nation is superior to all others. Most often, this sense of superiority has its roots in a shared ethnicity.
Nationalists demand to be independent of other countries. They don't join global organizations or collaborate with other countries on joint efforts. If the people are part of another nation, then they will want freedom and their own state. This also explains a lot about Foreign Policy from the Paris Climate, NAFTA, etc.., I have to touch a little on this a bit to explain my little knowledge on my own background with Asia Pacific Economic Cooperation Relations.
Nationalists believe their shared interests supersede all other individual or group interests. They oppose globalism and empires. They also rally against any philosophy, such as religion, that supersedes national loyalties. They are not necessarily militaristic but quickly become so if threatened.
So the case on immigration is that unfortunately Immigration falls on "Patriotism". As such, having a second term with this President is almost like a complete halt to US Immigration.