If you are puzzled why Democrats and the US Civil Service are begging judges to prevent the Trump administration from having access to official US government data, the Social Security data alone explains it.
The US population according to the CensusBureau is 334 million, but according to current Social Security records, there are 398 million people with active Social Security numbers. In other words, 64 million more people have US Social Security numbers than exist.
According to the Social Security Administrations official data, there are two active Social Security accounts of people who are older than the United States.