The Supreme Court is currently hearing a case that will determine whether or not the government is obligated to ensure water access for Native American tribes. The arguments in the case, Arizona v. Navajo Nation, hinge upon whether or not the government has violated past treaties with the tribe by not providing adequate water. Guest: Heather Tanana, assistant professor of law at the University of Utah and citizen of the Navajo Nation. If you enjoy this show, please consider signing up for Slate Plus. Slate Plus members get benefits like zero ads on any Slate podcast, bonus episodes of shows like Slow Burn and Dear Prudence—and you’ll be supporting the work we do here on What Next. Sign up now at slate.com/whatnextplus to help support our work. Learn more about your ad choices. Visit megaphone.fm/adchoices