A look back at the week in history
May 16, 1918 President Woodrow Wilson signs into law the Sedition Act barring disloyal, scurrilous or abusive criticism of government during World War I.
May 17, 1973 Televised Watergate hearings begin in the Senate.
May 18, 1896 The Supreme Court upholds racial segregation in the case of Plessy v. Ferguson.
May 20, 1873 Levi Strauss and Jacob Davis receive a patent for blue jeans.
May 22, 1843 The first major wagon train moves westward, from Missouri to Oregon.