Immigration is a long term winner for the left if they bring enough people to vote for them and keep the borders open, right now, the swing voter prefers the GOP's opposition to facilitate it because it sees that the most recent immigrants are not up to assimilate as much as the previous ones.
Mexico is the main source of immigration right now, americans don't have a problem with mexicans but Mexico is also a very populous country and that means tons of immigrants flooding America, including some of the worst types of people like criminals, rapists, drug dealers, because Mexico is no paradise, in fact, it's a country plagued by drug cartels and violence between them. But overall, Americans care more about the number of mexicans getting in than the fact that they are mexicans, that's why we need the wall, who is more opposed than supported because "muh human rights" but once it gets built, tearing it down will be much more unpopular because it will signal support for open borders and the reduction in illegal immigration the wall will produce, just like it happened in Hungary with the "refugees" will speak for itself and turn the wall into something popular.
If the source of immigration shifts to the Middle East, then opposition will only increase, Americans will never believe most of them can assimilate when people from that region threw two airplanes into one of the most famous buildings in NYC, and they see the horrors of open border policy for "refugees" in Europe and the increasing threat of radical islamic terrorism. They want vetting, even if they don't want an outright ban, when the temporary nature of the travel ban is mentioned in polls, support for it increases, it's clear that Americans want a very restricted quota of people coming from terrorist-plagued areas and "refugees" are not very welcome.
You sound kinda nutty...or fanatical maybe.
Try to take a more balanced approach to things.
