Check out the executive summary on immigration percentages. While this is a report from 2010 I am sure it is relative to today's mix in this country:

Immigrants in the United States, 2010: A Profile of America's Foreign-Born Population | Center for Immigration Studies

The real Americans are, for now, the majority at 75% +.

Interesting to note some other immigration information relative to poverty, child bearing and legality.

50% of immigrants from South of the border are here illegally.
Much of the immigrant population represents the poor.
Immigrants child births are higher than natural born.
A very high percentage (?) is on some kind of welfare/maedicaid/etc.

While not a part of this thread....there is no question or wonder why Obama is flinging the portals of entry into this country wide open with no regulation or enforcement.......increased poverty (hence reliance) and increased voter block (legal or illegal).