There are plenty of reasons to be against the current immigration regime that don't involve ethno-nationalism but it's nearly impossible to forward any such arguments without being accused of being an ethno-nationalist.
https://www.vox.com/2018/1/12/16885312/trump-shithole-countr...
Sen. Tim Scott (R-SC) told the Post and Courier that his South Carolina colleague Sen. Lindsey Graham, who attended the meeting, told him Trump’s reported comments were “basically accurate.”
And Sen. Jeff Flake (R-AZ), who also didn’t attend the meeting, told the Washington Post he heard about Trump’s comments before they went public, and they matched the later reports.
https://www.vox.com/2018/1/16/16897016/trump-shithole-shitho...
Anonymous Republican sources have pushed the story that Trump in fact used the phrase “shithouse countries.” According to the Washington Post’s Josh Dawsey, Robert Costa, and Ashley Parker, Sens. Tom Cotton (R-AR) and David Perdue (R-GA) told the White House that’s what they remember Trump saying in the meeting.
Trump has apparently decided that the controversy is hurting him politically, so his allies are using this minor discrepancy to justify public denials that he said “shithole.”
https://en.wikipedia.org/wiki/New_Year%27s_Eve_sexual_assaul...
> On 7 June, a Federal Criminal Police Office report confirmed that most of the perpetrators were of North African origin and had arrived in Germany during the European migrant crisis. Investigative results about the perpetrators were congruent with witnesses' statements.[48]
I'll leave it to you to research crime numbers like rape, theft andn such for carneval in Cologne or the Oktoberfest in Munich. Because These are the numbers that provide the context.
Disclaimer: That does not in the slightest way imply that any of These cases are defendable, the least of all rape. Still, context helps to prevent knee-jerk reactions.
Where did you get your 5 million from?
If 100 people out of 100,000 who migrate cause problems, and they are all fleeing intolerable living conditions, then the only reasonable way you can say that all 100,000 should be shut out is if you value the welfare of the 99,900 so low that it is outweighed by the social harm caused by the 100 even after taking into account the benefits of migration.