Cinco de Mayo commemorates the Mexican army's triumph over the French at the Battle of Puebla on May 5, 1862, led by General Ignacio Zaragoza. Despite the victory, the French later occupied Mexico City. The United States supported Mexico after its Civil War by providing resources, prompting France to withdraw its troops in 1866 after pressure from U.S. Secretary of State William H. Seward's demand for unconditional withdrawal. This holiday celebrates Mexican resilience against foreign intervention.
In 1998, a study in the Journal of American Culture reported over 120 official Cinco de Mayo celebrations in 21 U.S. states, highlighting the holiday's growing presence in American culture.
On June 7, 2005, the U.S. Congress issued a resolution, calling for the President to issue a proclamation to celebrate Cinco de Mayo with ceremonies and activities.
In 2006, a study found that official Cinco de Mayo events increased to 150 or more, according to José Alamillo, showing a growing cultural impact north of the border.
In 2007, a UCLA Newsroom article pointed out that Cinco de Mayo, despite being continuously celebrated in California since 1863, is largely ignored in Mexico.
According to Nielsen, in 2013, over $600 million worth of beer was purchased in the United States for Cinco de Mayo, surpassing sales for the Super Bowl or St. Patrick's Day.
On May 4, 2023, The Washington Post published an article describing Cinco de Mayo as an American holiday with Mexican roots, not necessarily a Mexican holiday.