What's your excuse for moslems?
Muslims are of no consequence, they will soon overplay their hand as they have every several hundred years. Were it not for oil money they would still be living in the desert and killing other muslims.
Holders peoples are no great danger to America. They have had hundreds of years to progress or even to increase their proportion, as did the Scots-Irish. In devious ways both eugenics and the War on Poverty have decreased their proposition and their effectiveness. As will their muslim cousins, they too will overplay their hand and run out of White Guilt/sympathy.
Latin Americans on the other hand will eventually be a significant plurality, if not majority. How America deals with that is the $64 question.