It wasn't just an American company, there were actually two companies, Bayer (German) and Baxter (American). Baxter have a history of very shady things, I'm surprised they're around. I wish the author cite the quote or more clear on that part.
https://en.wikipedia.org/wiki/Contaminated_haemophilia_blood...
https://en.wikipedia.org/wiki/Baxter_International#1996_Japa...