The fabrication of SoCs for mobile is mostly at TSMC in Taiwan and Samsung in Korea, but the ownership of the chips is American. TSMC manufactures the die, but it's fair to say that Qualcomm is the one "making" it since they own the IP and do the front and back end design-work. Similarly, you can say Apple makes the iPhone, even though final assembly is done at Foxconn or Wistron.