On this day: May 13

POSTED: 10:30 PM PDT May 11, 2013    UPDATED: 11:00 PM PDT May 12, 2014 
Mexican-American War, 1846

America declares war on Mexico, The Beatles film "Let It Be" premieres, Pope John Paul II survives an assassination attempt, and Tipper Gore doesn't like what she hears, all on this day.