PORT ISABEL — As the Mexican Día de los Muertos, or Day of the Dead, festivities drew to a close, Dina Nuñez called to order a meeting of female grassroots activists in a modest home in the heart of Port Isabel. Top of her agenda: how to stop a Houston-based oil and gas company from building a $10 billion project to export liquefied natural gas on a nearby stretch of coast.For Nuñez and her friends, the fight against the project — known as Rio Grande LNG — is about protecting their community from air pollution; preserving shrimping and tourism; and ...