Kansas Secretary of State Kris Kobach, who serves as vice-chair of the Presidential Advisory Committee on Election Integrity, sent a letter to every secretary of state in the US this week asking them to send publicly-available data on their voter rolls.
The information requested includes: full names of every registered voter, addresses, dates of birth, political party (if available), last four digits of social security numbers, voting history dating back to 2006, active/inactive status, cancelled status, felony convictions, and more.