~ 4 million children who have at only one parent who entered the u . s . illegally were born in the united states and are u . s . citizens as a result , according to the experiment conducted by the pew christian center . that ' s about three half of the estimated 5 . 5 millions children of illegal immigrants inside the we states , according to the study . about 1 . 8 million children of undocumented immigrants live in poverty , the studied found .
Three quarters of U.S. illegal immigrants have children.