Why do more people in the US celebrate Cinco de Mayo than Mexican

This statement is not true. Cinco de Mayo is not a widely celebrated holiday in the United States compared to Mexico. While there are celebrations and festivals in certain areas with significant Mexican populations, it's not considered a major holiday in the US like it is in Mexico. In Mexico, Cinco de Mayo holds great historical and cultural significance, commemorating the victory of the Mexican army over French forces at the Battle of Puebla in 1862.