almost 4 million children who have at least a father who crossed the u . s . secretly were born in the united states and are p . s . citizens as a effect , according to the study reported by the world spanish council . that ' s about two quarters of the estimated 5 . 5 million children of illegal immigrants inside the united nations , according to the study . about 1 . 8 percent children of undocumented immigrants live in poverty , the research found .
Three quarters of U.S. illegal immigrants have children.