Global View: Talking Harmonization And China With Just-Retired Commerce Official Jeffrey Gren-thegraysheet: Few have more experience advocating for the U.S. device industry abroad than Jeffrey Gren, a former director at the U.S. Department of Commerce. During his 38-year stint at the department, from which he retired in January, Gren promoted U.S. device and drug exports and regulatory harmonization across countries, among other responsibilities.