He says they must be allowed to provide their nine-digit social security numbers in place of photo IDs
This is stupid. A poll worker works in a certain precinct, with certain addresses within it. Therefore, they would need an ID with an address within that precinct and also a photo to match the person presenting the id.
A SSN would do no good whatsoever to determine whether a person is eligible to vote.
Also sounds like a recipe for identity theft. The Sec of State is afraid of his own shadow.