2015 Houston, Texas Proposition 1
Proposition 1 was a referendum held on November 3, 2015, on the anti-discrimination ordinance known as the Houston Equal Rights Ordinance (HERO). The ordinance was intended to improve anti-discrimination coverage based on sexual orientation and gender identity in Houston, specifically in areas such as housing and occupation where no anti-discrimination policy existed.
Source: Wikipedia — 2015 Houston, Texas Proposition 1 (CC BY-SA 4.0)