Sen. Joni Ernst (R‑IA) said during an interview Friday that communist China is conducting warfare against the United States by intentionally flooding the U.S. with fentanyl.Ernst, who serves as chairman of the Republican Policy Committee, made the remarks during an interview with CBS News.“The Chinese are selling these precursor chemicals into Mexico. Then the Mexican cartels are working on making the fentanyl and distributing up into the United States,” Ernst said. “I think that the Chinese are intentionally poisoning America. And of course, the Chinese don’t want to assist us with this.”“When we see an adversary like China poisoning our communities, it’s ve …