1799 – Congress standardizers US weights & measures.
1919 – US passed its 1st immigration law.
1824 – Interstate commerce comes under federal control.
1861 – US creates Dakota & Nevada Territories out of the Nebraska & Utah territories.
1877 – US Electoral Commission declares Rutherford B. Hayes (R) winner of the presidential election with an electoral vote of 185-184 against Samuel J. Tilden (D).
1903 – Martha Washington Hotel, catering to women only, opens in NYC.
1917 – Jones Act: Puerto Rico territory created, US citizenship granted.
1929 – US Congress creates Court of Customs & Patent Appeals.
1939 – Massachusetts Legislature votes to ratify the US Bill of Rights – 147 years late.
1949 – Lucky Lady II (USAF Superfortress), completes 1st nonstop round-the-world flight at Fort Worth, Texas, covering 23,452 miles in 94 hours.
1962 – JFK announces US will resume above ground nuclear testing.
1966 – 215,000 US soldiers in Vietnam.
1968 – 19 year-old American Peggy Fleming wins her 3rd consecutive World Ladies Figure Skating Championship in Geneva, Switzerland; announces her retirement, turns professional and eventually goes in broadcasting.
1970 – American Airlines’ 1st flight of a Boeing 747.
1974 – Grand jury concludes US President Richard Nixon is involved in Watergate cover-up.
1983 – Compact Disc recordings developed by Phillips & Sony introduced.
1991 – UN votes in favor of US resolutions for cease fire with Iraq.
2012 – Tornadoes kill at least 27 people in the American states of Indiana and Kentucky.
2016 – US astronauts Scott Kelly and Russian cosmonaut Mikhail Kornienko return to earth after nearly a year (340) days, setting an ISS record.
2017 – US Attorney General Jeff Sessions recuses himself from the investigation into Trump campaign contacts with Russia after revelations he met Russian ambassador.