>I suppose I should have been more specific.
Well, yes... but if I said something like "I support immigration reform" it's like... yeah, well... who doesn't? The question is "what do you mean by *immigration reform*?" After all, when I use that term there's a fairly good chance that I mean something different than, say, Trump.
It might be more useful to get at this at a lower level of resolution, before we talk about the particularities of the current American visa system.
So, in a general sense, I support strictly limiting immigration in most if not all forms. But, that DOES NOT mean that I support limiting American engagement in the world, or that I disagree with the principle that the United States should do something about the fact that there are thousands of just absolutely horrible manifestations of human suffering all over the world.
(While tangential to your question, for the purpose of clarity, I obviously support foreign aid for the purposes of at least improving human conditions in foreign countries to the degree necessary that their internal political climates are at least stable.)
I would functionally abolish the process of asylum requests in the United States for all but the most extreme cases. As a general principal, fleeing general social or economic conditions conditions that have manifested to the point that there is not a functional state within the borders of any particular asylum seeker's own country -- even if those conditions have manifested to a degree that actual physical safety is on the line -- is NOT a legitimate reason to seek asylum.
What does that mean? Here's an example: fleeing gang violence or tremendous poverty is not a legitimate reason to seek asylum, at the border or anywhere else. So, no Syrian refugees, at all, enter the United States in my framework, if the ONLY reason they're fleeing is because of ISIS, or something like that.
So, what IS a legitimate reason to seek asylum? As a general principal, a person is deserving of asylum only when attributes or actions of that individual (or a member of that individual's immediate family) have placed his or her physical safety at risk to a degree that they are unable to seek redress by political or legal means within their own country.
Well, what on earth does that mean? Here's a few examples to illustrate the point:
A Chinese national has spied on the Chinese government for the United States in ways that have meaningfully helped the United States, and Chinese Intelligence has caught on to that person's espionage. That person will be executed if they are caught, and they are under investigation. That person is a prime candidate for asylum in the United States.
A Saudi woman was raped by a member of her family, and became impregnated. She obtained an abortion. The Saudi Government as tried and convicted her of violating sharia law and she is scheduled to be publicly caned and then then executed in accordance with Saudi "law". That person is a prime candidate for asylum in the United States.
A Chechen 14 year old was denounced as being gay by an older brother, and he has been reported to the Kadyrov "government" and has been detained and is being tortured and mutilated by the Islamic "religious police" in Chechnya. He has never been convicted of any crime but is given the ultimatum that he will either leave Chechnya or he will be killed. That person is a prime candidate for asylum in the United States.
Here are some further examples of individuals who should NOT candidates for asylum in the United States:
A Syrian migrant has spied on ISIS for Israel, and provided meaningful intelligence to the Israeli government but that intelligence did not lead to meaningful advancements of American interests with respect to ISIS. Having applied for and been denied asylum in Israel, he has sought asylum from several European countries with whom Israeli intelligence is known to cooperate. There is no pending threat to his life or safety, and he remains a member of ISIS. That person should not receive asylum.
An Iranian woman has been raped by a member of her family. No pregnancy resulted, but she will be publicly caned in accordance with "sharia law". There is no threat to her life or physical safety beyond the imposition of that "punishment". No asylum.
A Saudi teenager has been outed by his boyfriend as gay, though he has denounced his boyfriend and denied being gay. He is found not to have violated the "law" of Saudi Arabia, even though Saudi Arabia has in accordance with the "law" of that country executed the boyfriend. There is no pending threat to his life. That person should not receive asylum.
Now, returning to the visa issue...
I am seriously opposed to granting visas to foreign workers in all but the most extreme circumstances. This would represent a "limitation" on the current system.
For example, suppose Google wants "the world's best coder" from Mumbai to come work at its campus in the Bay Area as a software developer. That is absolutely not an acceptable reason to grant someone a visa. Hire an American.
On the other hand, suppose Johns Hopkins hospital has a patient who is not medically stable and requires the services of a a highly specialized brain surgeon, or the patient will die. There are brain surgeons who would be "competent" to perform the surgery, but few surgeries of this kind have ever been performed. Nonetheless, there exists a surgeon who has successfully performed this particular highly specialized brain surgery more than 20 times in his medical practice in Beijing. Performing the surgery is an excellent reason to grant someone a visa to work in the United States.