4. Thomas Jefferson
Thought of by many as the epitome of modern-day libertarianism, Jefferson did his best to enact pro-liberty policies once he became President. He eliminated much of the “Hamiltonian” government excess that had been left behind by Presidents Washington and Adams. He also banned slavery in the Northwest Territory, as well as banning the International Slave Trade in 1807. While some libertarians may decry the Louisiana Purchase, Jefferson is documented as having been very hesitant and thoughtful about the constitutionality of his actions.