An LGBTQ rights advocacy group has filed a federal lawsuit on behalf of eight Nevada couples against the state’s same-sex marriage ban. The suit from the Lambda Legal Defense and Education Fund says the state’s 2002 amendment banning same-sex marriage violates the Equal Protection Clause of the U.S. Constitution. The lead plaintiffs in the case, Beverly Sevcik and Mary Baranovich, are a couple in their seventies who have been together for more than 40 years.