Belgium is a Germanic country?
Since you insist in highlighting the rejection to others non Germanic, I should tell you that I am Spanish and that, while you will not find many of my people in your country, there are lots of Swedes, Norwegians, Germans, Dutch (you forgot these as Germanics) in my country.
So yes, I understand your concern because it is a pain here (especially in my area).
I would, ideally, accept only people from Hispania (so-called Iberian Peninsula) and Occitania (so-called Midi). However, right now, as things stand, it is far from being my main concern and I pretty much doubt that it should be yours in your country.
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'Dardanidae duri, quae uos a stirpe parentum
prima tulit tellus, eadem uos ubere laeto
accipiet reduces. Antiquam exquirite matrem:
hic domus Aeneae cunctis dominabitur oris,
et nati natorum, et qui nascentur ab illis.'
We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light.