http://ftp.zew.de/pub/zew-docs/dp/dp20002.pdf
https://lawliberty.org/the-fourteenth-amendments-ambiguous-section-three/
https://oversight.house.gov/sites/democrats.oversight.house.gov/files/2021-10-08.CBM%20GEC%20to%20Carnahan-GSA%20re%20Old%20Post%20Office%20Building%20Lease.pdf
https://journals.sagepub.com/doi/pdf/10.1177/0010414021997504