Whilst there is such disadvantage in being born into lower socio-economic stratums of the 2nd and 3rd worlds, it is incumbent upon the First World to allow some immigration of disadvantaged peoples abroad, to enjoy a First World Lifestyle, whilst there is such a discrepancy in wealth between nations. This is in addition to the welcoming of refugees genuinely fleeing persecution in their home countries, with on-shore processing.
Simultaneously First World countries must eradicate 3rd world national debts, and increase aid to close the wealth gap between nations, as well as the wealth gap within nations between individuals and classes of individuals.
This is to establish and maintain ethical and political authenticity.
Henry Willoughby's Social Justice Blog 