High Quality Content by WIKIPEDIA articles! The incorporation of the Bill of Rights (or incorporation for short) is the process by which American courts have applied portions of the U.S. Bill of Rights to the states. Prior to the 1890s, the Bill of Rights was held only to apply to the federal government. Under the incorporation doctrine, most provisions of the Bill of Rights now also apply to the state and local governments, by virtue of the due process clause of the Fourteenth Amendment of the Constitution.