1) With illegal immigrants, you can easily deport them. It's been done in the past (1950s, 1990s) without much trouble.
With legal (non-white) immigrants, you cannot just "deport" them because the majority will become naturalized citizens, and citizens have rights you can not easily rid of - except when the Tiny Hat Foreskin Chompers come in and tell your pedo-compromised politicians to pass abominable legislation like the Patriot Act.
The end result is that the white population percentage wise (and possibly absolute numbers wise) continues to wane.
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2) Legal immigrants take high skilled jobs from high skilled natives.
I am not an economics junkie, but if I had to wager money, I would bet that letting in a lot of "unskilled" migrant laborers or even illegal immigrants is far less damaging than letting in a bunch of "high skilled" immigrants with regards to the impact on the job / labor market for natives.
Corporate America and Wall Street push the myth that there aren't enough skilled American workers. There are more than enough skilled natives to do work in medicine, science, technology, engineering, etc. - they just don't want to pay much so they can distribute more to shareholders.
Additionally, one will also note that non-whites tend to be more "obedient" (just look at how the gooks at Samsung work 12 hrs/day and never complain, or how Japs stay well past 5 PM to please their bosses in corporate wage slavery) and simply follow orders.
White people are more prone to challenging authority (look at how often unionized workers in primarily white countries strike vs workers in non-white countries), which the corporate overlords dislike.
"They want OBEDIENT WORKERS!" ~ George Carlin
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Every job a "legal immigrant" takes is one less job for an American native (white or non-white descendant who has been here at least 4+ generations).
If I had to choose between letting in 500K illegal immigrants, the majority of whom will do low paid, **** jobs vs 500K legal immigrants - at least half of whom will work in higher paid jobs - I would 100% choose the former. Yes, technically the former broke the law, and the latter didn't, but I don't care.
I care about the material impact of said immigration.
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The illegal vs legal immigration dichotomy is another <<< THFC >>> manufactured controversy to get people to quietly accept that allowing more (non-white) people in is inevitable.
Basically they've already decided for you: "Yes, you must accept immigrants, now the question is: do you want more or fewer illegals?"
The reality is that if you're against "illegal" immigration but in favor of "legal" immigration, then ask yourself if you would be OK doubling or tripling the legal immigrant quota every year. In fact, let's just allow in 25-30 million legal immigrants every year instead of however many we allow in now.
Capiche?
@Cannonpointer