On June 8, 1789, James Madison introduced a set of constitutional amendments that would become the Bill of Rights. Madison argued that these rights needed protection not only from the federal government but also from state governments, stating, "the state governments are as liable to attack these invaluable privileges as the general [national] government is, and therefore ought to be as cautiously guarded against."

Originally, the Bill of Rights applied only to the federal government. The First Amendment, for example, prohibits Congress from making laws "respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press, or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances." However, under the original Constitution, states were free to enact laws that limited these rights unless their own constitutions provided protections.

This changed with the ratification of the 14th Amendment in 1868. Jacob Howard (R-Mich.), who introduced the amendment in the Senate, explained that the "mass of privileges, immunities, and rights" secured by the Constitution "do not operate in the slightest degree as a restraint or prohibition upon State legislation." He added that the amendment's primary purpose was "to restrict the power of the States and compel them at all times to respect these great fundamental guarantees."

Historical examples illustrate the need for such protections. In 1831, the Georgia legislature authorized a $5,000 bounty to be paid by the Governor to anyone who arrested and prosecuted the editor or publisher of "the Liberator," or anyone circulating the paper within Georgia, demonstrating how states could suppress speech without federal limits.

The Supreme Court has reaffirmed that initially, the Bill of Rights did not limit state authority, but the 14th Amendment has since extended these fundamental rights to apply against state governments as well.

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