I do not know the answers but I did note this passing along with the dual citizenship status.
https://cancerletter.com/obituary/20240614_2/
“Father of tamoxifen” V. Craig Jordan dies at 76 - The Cancer Letter
Pharmacologist V. Craig Jordan, a professor of Breast and Medical Oncology and Molecular and Cellular Oncology at The University of Texas MD Anderson Cancer Center who discovered selective estrogen receptor modulators and developed breakthrough breast cancer treatments, died June 9 at his home ..
https://cancerletter.com/obituary/20240614_2/