Here is a link to an interesting post on Leonid Schneider’s blog. We must not forget that "pure" Whites are simply the descendants of people born centuries ago in the UK, Germany, and Scandinavia—those noble heirs of the so-called Germanic tribes, who in turn trace their lineage back to the mighty (and, of course, most intelligent) Odin. It is through Odin that we find the explanation for their tremendous IQs.
Meanwhile, natives of Portugal, Spain, Italy, and Greece suffer from excessive tanning, and Eastern Europeans lack any direct bloodline connection to Odin. Thus, they are not really White (and, therefore, do not possess tremendous IQs). This helps explain why, several decades ago, the USA "wisely" imposed racial quotas "limiting Italian American immigration...and immigration from other southern European and eastern European nations".
Even today, some American university professors—much like the "orange genius" Donald Trump—remain skeptical of non-White immigration. Perhaps they simply haven't been informed that too many tremendous IQs concentrated in one place can be a dangerous thing:
PS1 - The image above features a group of true American natives (not to be confused with Native Americans) who, long before Columbus arrived, were already wearing white uniforms. This, of course, serves as irrefutable proof that America was first discovered and colonized by White Vikings. However, since America is such a sunny place, these wise Vikings used white uniforms to prevent excessive tanning—fully aware that tanning leads to a severe reduction in IQ.
PS2 - A few years ago, I applied for a Chair position at a Swedish university (one of the Whitest countries—if not the Whitest—on Earth). In the second phase, four candidates (two Swedish, one Chinese, and one Portuguese) were required to give a presentation. On slide 6, I quoted the late Portuguese scholar Eduardo Lourenço (essayist, professor, critic, philosopher, and writer), who passed away on December 1st: "My greatest pride as Portuguese is the fact that we are a mix of people and races"