Simon: "They don't just want the public stuff which anyone can get - name, address, voting history, stuff like that. What they want is very personal, private, sensitive data on millions of people - namely, Social Security numbers, driver's license numbers, military service history where applicable"

U.S. immigration authorities detained at least four children, including a 5-year-old from a Minneapolis-area school district, as part of President Trump's immigration crackdown, Zena Stenvik, the Columbia Heights Public Schools district superintendent, said.