(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 too-rapid transition could spur gasoline price spikes this summer.Most Read from BloombergNvidia Rises Most in About Nine Months as AI Drives SalesT-Bills Without Tax Bills? This Fund Says It Cracked the CodeNasdaq 100 Climbs 3% as Big Tech Roars on AI Bets: Markets WrapBiden Touts $1.2 Billion in Student Loan Relief With Eye t