A government report came out in which it stated that it takes immigrants approximately 100 years to assimilate into the population (Americanize). When America absorbs immigrants at record rates without the chance to Americanize, then we have lost America and its values. IMHO, America will have a revolution on it's hands and that is what one is sensing now. Are not Conservatives fighting for American values?
How many will suffer in the world after we lose our identity?
Some immigrants never ever assimilate.
As it's already been pointed out, these numbers are lower than they were at the turn of the last century. This is much hullabaloo over nothing.