Why is the Bill of Rights referred to as the anti-Federalist legacy?The Bill of Rights was added to the Constitution in response to anti-Federalist fears that the new government would take away the liberties of the people and the states. The Bill of Rights was added to the Constitution through the formal ratification process, starting with Congress and then proceeding through the states. The Bill of Rights was ratified two years after the Constitution went into effect. The anti-Federalists opposed the ratification of the Constitution.