So let's say the USA sent everyone with an IQ below 110 to gas chambers. Everyone with an IQ above that could stay regardless of their race. What do you think the resulting society would be like? 
And yes, I know ethnostate refers to race or ethnicity. I'm just using the word because I can't think of a better one to describe this kind of thing.

And yes, I know ethnostate refers to race or ethnicity. I'm just using the word because I can't think of a better one to describe this kind of thing.