What presidential power was James Madison the first to use?

James Madison was the first U.S. president to exercise the veto power in a significant manner by vetoing legislation he deemed unconstitutional. Specifically, he vetoed the recharter of the National Bank in 1811, arguing that it exceeded the powers granted to Congress. This action set a precedent for the use of the veto in American governance, emphasizing the importance of constitutional interpretation in presidential decision-making.