Des Moines Register: An Iowa cancer treatment startup blames U.S.-China trade tensions for blocking a key investment. In a letter to the Iowa Economic Development Authority, Immortagen Inc. co-founder Kristi Thiel said a Chinese investor can’t send a promised $2.7 million to the Coralville company because of tensions between the United States and China. The authority, which loaned Immortagen $100,000 in March 2017, unanimously voted Friday to let the company suspend payments because of the investment stuck across the Pacific Ocean.