Events from the year 1920 in the United States. Incumbents Federal Government President: Woodrow Wilson (D-New Jersey) Vice President: Thomas R. Marshall (D-Indiana) Chief Justice: Edward Douglass White (Louisiana) Speaker of the House of Representatives: Frederick H. Gillett (R-Massachusetts) Senate Majority Leader: Henry Cabot Lodge (R-Massachusetts) (starting March 4) Congress: 66th Events January January 2 – First Red Scare: The second of the Palmer Raids takes place with another 4,025 suspected communists and anarchists arrested and held without trial in several cities. January 5 – 1920 United States Census count begins. This becomes the first census to record a population exceeding 100 million, at 106,021,537. Because there are so many mixed-race persons and because so many Americans with some black ancestry appear white, the Census Bureau stops counting mixed-race peoples and the one-drop rule becomes the national legal standard. January 6 – Babe Ruth's December 26 trade to the New York Yankees is made public. (See 1919 in the United States.) January 7 – The New York State Assembly refuses to seat five duly elected Socialist assemblymen. January 9 – Thousands of onlookers watch as "The Human Fly" George Polley climbs New York City's Woolworth Building. He reaches the 30th floor when a policeman arrests him for climbing without a permit. January 13 – The New York Times ridicules the American rocket scientist Robert H. Goddard. (Decades later, on July 17, 1969 as the Apollo 11 crew head to the Moon, the newspaper will retract this editorial.) January 16 – Zeta Phi Beta Sorority, Incorporated, is founded on the campus of Howard University in Washington, D.C. January 17 – Prohibition in the United States begins with the Eighteenth Amendment to the Constitution coming into effect. January 19 The United States Senate votes against joining the League of Nations. The American Civil Liberties Union (ACLU) is founded. Oahu sugar strike of 1920 begins. January 30 – A professional wrestling match in which Joe Stecher defeats Earl Caddock at New York City's Madison Square Garden is filmed by Pioneer Film Corporation for later viewing by cinema audiences; this is the oldest surviving movie of a pro wrestling match. February February 14 – The League of Women Voters is founded in Chicago. March March 1 – The United States Railroad Administration returns control of American railroads to its constituent railroad companies. March 10 – The Baylor Business Men's Club changes its name to