Funny how you twist the logic.  It is the left that is concerned with population levels and the environment.   The right believes in increasing birth rates, but just with more whites.   

As someone on the far left I do not believe we should accept refugees or immigrants from any countries with birth rates over 2.99.  It is environmentally irresponsible. 

People on the centre and on the right believe first and foremost in economics and that is why you hear Canada needs millions more people to make us richer.  Not us individually you see but to increase the  wealth of the .01% or better known  as the people our governments serve first.

Until the right figures out man and life is not intended to be a financial only affair and the economy is not meant to be a darwin struggle but a system to allow a reasonable number to thrive as humans nothing will change.   None are so blind as those who refuse to see.