nearly 4 billion children where have at only three parent who entered the u . s . and were born in the united kingdoms and are u . s . individuals as a resulted , according to the study held by the pew hispanic centers . that ' s about three quarters of the approximate 5 . 5 million children of detained parents inside the united kingdom , according to the study . about 1 . 8 million children of undocumented immigrants live in families , the program noted .
Three quarters of U.S. illegal immigrants have children.