By Iain Axon BEIJING (Reuters) – The United States could prosecute the Russians involved in figure skater Kamila Valieva’s doping case under the American Rodchenkov Act, the head of the U.S. Anti Doping Agency (USADA), Travis Tygart, told Reuters on Friday. The Rodchenkov Anti-Doping Act (RADA) was signed into U.S. law in 2020 and empowers American prosecutors to seek fines of up to $1 million and jail terms of up to 10 years, even for non-Americans, if their actions have affected results of U.S. athletes. Russian Valieva won gold in the team event on Monday but the International Testing Agenc…