On April 5, 2021, U.S. Senators Amy Klobuchar (D-MN) and Joni Ernst (R-IA), introduced a $500 million bill on biofuels infrastructure. The bill, titled the Renewable Fuel Infrastructure Investment and Market Expansion Act, would create a grant program to aid fuel retailers in streamlining sales of fuels with higher ethanol blends. These infrastructure grants would be available for five years. Senator Klobuchar highlighted that "[d]iversifying our fuel supply and introducing higher blends of biofuels in the market are great steps forward as we work to promote clean energy technologies and invest in transportation infrastructure.” She also stated that this legislation would highly benefit the economy and the environment by making cleaner fuels more accessible.