(Bloomberg) -- The Biden administration granted a fuel policy change designed to boost sales of corn-based ethanol — but delayed the shift until next year amid concerns a rapid pivot could spur gasoline price spikes this summer.Most Read from BloombergNvidia Rises Most in About Nine Months as AI Drives SalesUS Unveils Fresh Sanctions on Russia After Navalny’s DeathT-Bills Without Tax Bills? This Fund Says It Cracked the CodeUS Lands on Moon in Historic Feat for Private SpacecraftBezos, Nvidia Jo