Dear Ms. Humes, I am writing in response to the May 20 Federal Register notice soliciting comments on the Residence Rule and Residence Situations. I am a data scientist (BS Math Caltech '86, PhD Math MIT '89) with several refereed publications on the mathematics of voting. The data which the census bureau collects inmates according to the home address is of critical importance and I strongly urge you to count inmates at their home address rather than the particular prison in which they are incarcerated on April 1, 2020. This data will help us researcher understand the effect of incarceration on the home community. On a more practical level, without this data, citizens who are barred from voting become literally political prisoners as their place of incarceration can be chosen to transfer representation from their home community to the location of their prison. I would be happy to discuss this matter in more detail with you or any members of your staff. Thank you for your consideration. Yours, Dr. Daniel E. Loeb, Ph.D. loeb17@gmail.com, 215-866-6620 276 Barwynne Lane, Wynnewood, PA 19096