long term feasibility of a foreign race maintaining and holding a government on foreign land from their own is very unlikely. the lack of not having sufficient genetic diversity just means that they will be swallowed into the the indigenous ppl.. look at mexico although 70% of the country have european blood the indigenous blood still is too abundant. same for america the race of ppl who came to settle, killing millions of indigenous ppl before forming their government was still too small a group and over time have gotten smaller while the indigenous ppl have multiplied and are once again will become the majority. in the next 50 years the Indigenous Blood people will exceed european americans and from then will simply fade and be swallowed into the indigenous race only way for White America to stay in power is to start to increase the number of white europeans immigrants in mass which is very unlikely