Last year the South Carolina Democratic Party filed a federal lawsuit against the law that requires voter registration applicants to disclose their full Social Security number. On January 16, the state agreed to settle the lawsuit, and require only the last four digits. The case was South Carolina Democratic Party v Andino, 3:19cv-3308. Here is the Democratic Party’s dismissal of the case.

Now the only two states that require the full social security number are Virginia and Tennessee. Normally the 1974 federal Privacy Act would prevent states from requiring the full SSN. However the three states mentioned in this blog post had been requiring the full SSN since before the 1974 federal act took effect, so they were exempt from the federal law.