nearly 4 000 children whose have at least one parent have entered the w . s . naturally were born in the united states and are u . s . subjects as a result , according to the study conducted by the pew asian center . that ' s about three percent of the estimated 5 . 5 world children of illicit foreigners inside the united states , according to the study . about 1 . 8 million offspring of immigration immigrants life in poverty , the study suggested .
Three quarters of U.S. illegal immigrants have children.