WASHINGTON, Oct. 31 -- Sen. Joni Ernst, R-Iowa, issued the following news release: * * * Ernst Works to Support Homegrown Iowa Biofuels * WASHINGTON - Ahead of the final Renewable Fuel Standard (RFS) rule, U.S. Senator Joni Ernst (R-Iowa) joined her colleagues in standing up for biofuel producers and supporting the U.S. Environmental Protection Agency's (EPA) proposed Renewable Volume Obligations (RVOs) under the RFS "Set 2" rule. In a letter to Administrator Lee Zeldin, the lawmakers also more PR