House Memorial 40, introduced by Andrea Romero, declares February 2, 2026, as "Mexican American Chicano Heritage Day" in the New Mexico House of Representatives. This date commemorates the signing of the Treaty of Guadalupe Hidalgo in 1848, which significantly impacted the cultural and geographic landscape of North America by ceding lands to the United States and establishing a new ethnic identity for Mexican Americans. The memorial highlights the contributions of Mexican Americans and the Chicano movement to the United States, emphasizing their roles in politics, culture, and civil rights.

The resolution calls for the observance of Mexican American Chicano Heritage Day to promote unity and understanding of the Chicano movement within New Mexico. It also mandates that copies of the memorial be sent to the governor and members of the legislature, ensuring that the significance of this day is recognized and celebrated.