The project is to create categories of all legislation signed by presidents of the United States corresponding with the Congress' matching with their tenures in office. For reference: https://www.congress.gov/search?q=%7B%22source%22%3A%22legislation%22%7D, List of United States federal legislation, List of United States federal legislation, 1789–1901, List of United States federal legislation, 1901–2001, List of United States federal legislation, 2001–present