SIOUX CITY — Democratic challenger for governor Fred Hubbell, in a debate Wednesday, said Trump administration tariffs on China have hurt Iowa farmers.Republican Gov. Kim Reynolds said producers understand the tariffs ultimately will lead to an improved overall economy.The two opponents, in an hourlong debate Tuesday, also discussed recent sexual harassment cases in Iowa government.One of the three moderators asked whether Hubbell and Reynolds support the direction of President Donald Trump’s tariff moves on China, which have hurt soybean prices.Reynolds replied, “China has been sticking it to us for years,” particularly with theft of U.S.