Supreme Court to decide Navajo Nation's access to Colorado River water.

The Supreme Court is considering whether the Navajo Nation can pursue a claim that the federal government has a duty to address the tribe's water rights. The tribe wants rights to waters in the Lower Colorado River that flows along the Navajo reservation's northwestern border. The case touches upon the complex array of agreements and court decisions that over decades have dictated how the waters of the Colorado River are allocated among the states. The dispute is over whether the government had a legal duty that the tribe can enforce in court.