I don't disagree that Trump created a much worse environment for attracting talent from the visa process to general perception of the US but I think quite a few

I don't disagree that Trump created a much worse environment for attracting talent from the visa process to general perception of the US but I think quite a few issues that make people hesitate about trying to move to the US came before him. I'm thinking about the difficulty of navigating most areas without owning a car, issues with healthcare, gun control, etc.