President Biden was pictured stepping off Marine One in the Hamptons Saturday afternoon while clutching wife Jill Biden’s arm — just two days after he made a frail showing at his first 2024 debate against Donald Trump. Biden, 81, and the first lady put up a united front at Francis S. Gabreski Airport in Westhampton Beach, down to their coordinating blue-hued ensembles. The couple is set to appear at a star-studded fundraiser at the home of hedge-fund billionaire Barry Rosenstein and his wife Lizanne.