After all the States agreed to live under the Constitution, General George Washington became President and appointed Hamilton to be Secretary of the Treasury Department. As the very first person in this role, Hamilton was able to design much of the structure and function of the Treasury. He redesigned large parts of the national financial system, established a Mint to make coins, and made regular financial reports to Congress.
Hamilton's tenure as Secretary of the Treasury led to the earliest U.S. political parties. Parts of his plans to overhaul the national financial system required Congressional approval, but some members of Congress disliked Hamilton and disagreed with his belief in strong government. James Madison and Thomas Jefferson started a Congressional faction against Hamilton's plans; they became known as the Democratic-Republicans, while Hamilton assembled the opposing Federalists.
Hamilton retired as Treasury Secretary in 1794 but remained an influential voice in politics. His headstrong personality came to a climax during the presidential election of 1800. His own party, the Federalists, supported John Adams to run for re-election. Thomas Jefferson and Aaron Burr both ran as Democratic-Republicans. Even though they shared a political party, Hamilton hated Adams and publicly ridiculed him.

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