Warning: Star-Spangled opinion below
Anti-immigrant rhetoric in America is very disturbing to me. Illegal immigrants commit proportionally less crime than US citizens (which makes sense because they don't want that sweet ICE hammer to come down if they get caught - kind of obvious actually). Low-wage immigrant labourers are vital to the economies of agricultural states, like the Eastern half of mine :^). Also, if you can't compete with someone who has only recently arrived in America and doesn't even speak English, then you did not deserve your job.
Very unfortunately, people who are
A. uneducated, and
B. employed in skill-less labour jobs (or on the dole lmao) because they're uneducated,
can and do vote, in droves, for fascists like Trump/Sanders who promise to bring back 17th century protectionism and nativism (less so the nativism in Bernie's case, it's more veiled). A very large and reliable voting bloc for this sort of policy is found in the elderly.
This is tragically amusing, because a massive amount of new immigrants to the US are NEEDED to keep the Social Security fund (BIGGEST line item on the US budget), that pays for their sad existence, solvent. At the same time that elderly voters back people against entitlement reform, they back people against immigration (and more recently people in favor of the Feds rounding up people, stealing their money, and sending them back to their country of origin). It's a double whammy of self-serving ignorance. Every paycheck I get, money is withheld for Social Security, on the premise that everyone pays into the system and then they get the money when they retire. Nobody my age will ever see any of that money.
I understand that the European issue of mass-immigration and refugee/migrants is entirely different from this. Even opposite, they need to keep immigrants out to retain their disgusting welfare states. Hopefully this (as well as recent events) motivates them to participate in solving the myriad problems of the Middle East in real ways (Germany is doing good work arming the Iraqi Kurds, others by participating in our bombing campaign). It terrifies me that America will need another major attack on its own soil (and a new, not-foreign-policy-inept President -- good luck with current candidates) to find that motivation to actually commit. "The refugee crisis" or "mass-immigration" will never be solved so long as the Middle East isn't solved.
As for our bombing of Japan:
-Nagasaki and Hiroshima were targeted for their military-industrial significance
-Leaflets were dropped warning of the imminent bombing for a long period of time
-The bombings killed ~100k-200k (the majority being civilians, which is a horrible tragedy), rather than the millions (low estimation for America alone in invasion scenario was 5mil.) of casualties on both sides which would have resulted from an invasion of mainland Japan (Hell of a lot more civilians too, even discounting embargo/collateral damage, they were ordered to commit ritual suicide if the allies overran the Imperial Army, and this happened on other islands)
-Russia invaded Manchukuo, and would have also invaded mainland Japan with the other Allies had the war not ended (would there be an East Japan and West Japan still today? Would that be better? How would this have reshaped the Cold War?)
TLDR:
1. America needs immigrants and populists are the Devil
2. Western powers need to give Daesh run in order to solve crisis
3. Bombing Japan was far better than the alternative