AP Photo/Bebeto Matthews Rosa, second from right, an undocumented immigrant who wants her family's last name withheld, is surrounded by her son Edgar, far right, daughter Olga, far left, and grandson Logan at their home in New York T his article appears in the Summer 2018 issue of The American Prospect magazine. Subscribe here . W hether it’s being ripped from their parents at the border or being forcibly withheld from joining their relatives in the United States, undocumented children have become casualties in the Republican crusade against immigrants deemed undesirable. The Republican Tax Act is the newest assault. The new tax bill increases the Child Tax Credit from $1,000 to $2,000 per child under age 17 for U.S. citizens, but denies the credit to immigrant children without a valid Social Security number. The bill’s authors estimate that the provision will save more than $20 billion over the next ten years—an indirect transfer from poor immigrants to the wealthy, the primary...