Goes all the way back to the 1980’s when global outsourcing started with nearly every industry/corporation in the U.S. I worked in defense so much of that wasn’t offshored until much later. Drug manufacturing was outsourced to Puerto Rico around the same time. Cheaper. Plus, without tort reforms and yes, patent protections, it wasn’ cost effective to develop flu vaccines here. (Parents both worked in Pharma)
Back to Reagan?