America will be more like California, with Whites a minority, high taxes etc. etc. etc.
Europe will be a Muslim Continent with all of the Islamic immigrants and their much higher birth rates.
You say that Inner city moms will start having less kids because they can't support themselves? What country are you living in?
1) That would assume that they are rationale.
2) That would assume they already support themselves.
Birth rates are always much higher for poorer people.
Look at the richest parts of the world, US, Europe and Japan with older aging popularions.
Look at southeast asia and africa. The poorest places on earth with the highest birth rates.
Ever heard the saying " only stupid people are breeding"?
Even look at America, who has higher birthrates, the female lawyer who works 80 hours per week or the woman on welfare and food stamps popping out kids left and right?