It is not a crime for an illegal immigrant to use fake federal documents to obtain a legitimate state license, according to a remarkable ruling issued this week by an Obama-appointed judge in south Florida. The defendant, 38-year-old Rubman Ardon Chinchilla, was among 20 people arrested several months ago in a scheme that used bogus immigration documents in driver’s license applications. The man who masterminded the operation, a naturalized U.S. citizen from Cuba, has been charged with fraud. Chinchilla, a Honduran national, has lived illegally in the U.S. for decades, according to a local newspaper report, and has three American-born...